Market Size
A statement like, "The market for recorders is over $100 million per year," leaves a lot to be desired. What is wrong with that statement? Just like engineering, when monitoring or measuring a dynamic variable, the measurement must be well defined and all external variables considered. For example, if you were testing a jet engine for its vibrational characteristics, you would not just document the vibration level of the engine during operation. In a test of this nature you might also like to note the status of other parameters such as:
- Engine speed
- Fuel mixture
- Wind speed
- Wind temperature
- Time
- Oil temperature
- Weather conditions
- Altitude
What is the time period?
- One year (usually assumed)
- Six months
- One month
- 1986?
- 1989?
- 1991?
- U.S.
- World
- Europe/Japan
- Nepal
- Production
- Consumption
- Secondary data sources
- Competitor interviews
- End-user surveys
- Experience
- Currency
- Units
- Volume
- Video recorders
- X/Y chart recorders
- Floppy disks
- Hard disks
- Film recorders
- Tape recorders
- Cassette tape recorders
We cannot exaggerate the importance of making accurate measurements of market size. Virtually all companies make a rough estimate of that parameter and let it go at that. Some of the larger companies in broader product segments have a dedicated market engineering staff that accurately tracks the size of various market segments within market segments of the particular industry. Consider them lucky. However, less-significant product segments that the research community tends to ignore must rely on experienced "old boy" guesswork or (worse yet) on government statistics.
There are many methods by which you can calculate market size. These methods can be categorized into two subgroups - the wrong methods and the right methods.
How Not to Determine Market Size
- Based on customer demands extrapolated from a small sample size
- Based on potential
- Based on current rates of production or production capacity
- Based on government statistics
- Based on a competitor's guess or your boss's guess
Production is also a poor indication of customer demand because production and actual sales are rarely perfectly coordinated. Government statistics are calculated with very poor methodology and little regard for accuracy; be careful if you base anything on those numbers.
Typically, market size estimates are based on rumor and expert opinion. For example, we were talking to the chief executive officer (CEO) of a large manufacturer of industrial equipment. He asked us to tell him the market size for his product line. We told him we did not know, but he insisted that he had read an article of ours that discussed the numbers. We finally gave him an estimate, which he later used in an interview with the Wall Street Journal. For the next two years, that was the market size the entire industry used as a benchmark.
How to Measure Market Size
There are three ways to measure market size, two of which are based on competition and one of which is based on customers.
- Competitive sales (bottom-up approach)
- Competitive sales (top-down approach)
- End-user purchases
The top-down approach, which is used most often by research firms, is based on a series of competitive interviews where each competitor is asked for an estimate of the market size. These estimates are sometimes weighted and then averaged for the market size calculation.
The last way of calculating market size is based on end-user purchases during the period. If there are few end-users, this is an accurate measurement. However, as the end-user base increases, the cost rises and the accuracy of the measurement falls. A smaller sample will have to be taken and extrapolated to approximate the entire user population.
What Does Market Size Really Tell You?
Market size is one of the fundamental measurements that must be taken on the market. It is the standard measurement ruler against which all of a company's activities should be measured.
For example, expenses for an R&D project should be related to market size. The same is true for sales force and marketing expenses. On one hand, you do not want to over-invest based on market size. On the other hand, you do not want to under-invest in large, fast-moving markets.
Case Study: Measurement Instrumentation
This client was a 25-year-old manufacturing company founded by three engineers who were then fresh out of engineering school. Over the years, the firm evolved into a three-division company, as shown in Figure 1:
Figure 1 - Market Size: Case Study Company Structure
Division | Sales (%) | Salespeople (#) | R&D Expense ($ Million) |
Pressure Sensors | 34 | 24 | 12 |
Humidity Inst. | 36 | 25 | 15 |
Navigational Inst. | 30 | 20 | 14 |
The fundamental problem they had was that none of them really knew where their relative strengths and weaknesses lay. They had no marketing department per se, although they did have sales managers and a literature development group. Each division had its own sales support structure, and was of roughly equal size based on contribution to total sales.
We started on a quick market engineering overview of the company to determine where it was positioned in the market. As each division was in a radically different product area, we had to develop three distinct overviews.
The first and perhaps the most important parameter that we determined was the firm's size in each of the markets in which its divisions competed. Of course, knowing the market size and volume of sales of each of the divisions, we could immediately calculate market share, as shown in Figure 2:
Figure 2 - Market Size: Market Share Calculations
Division | Sales ($ Million) | Market Size ($ Million) | Market Share (%) |
Pressure Sensors | 40 | 600 | 6.6 |
Humidity Inst. | 43 | 50 | 86.0 |
Navigational Inst. | 36 | 110 | 32.7 |
As we previously indicated, each of the company's three divisions was run by one of three partners. Unfortunately, the non-aggressive partner was responsible for the pressure sensor market.
A few simple calculations illustrated the immense potential that lay in the pressure sensor market, as shown in Chart 1 and Chart 2.
The Response
- The company stopped its investigations into acquisitions and product development outside its areas of expertise.
- The company formed a management committee to oversee all product lines rather than segmenting the firm into three discrete divisions. The division strategy made no sense based on market size.
- The company began increasing the number of salespeople in the pressure sensor market. The company decided to increase the sales force by 10 percent per year for three years and to observe the level of sales per salesperson to determine if they remained stable.
- The firm allocated additional funds for product development to grow the pressure sensor market in line with the two other segments the company addressed.
- The company grew by an average of 11 percent per year over the next three years, approximately 6 percent higher than over the previous three-year period.
- Sales from the pressure instrument division now account for 51 percent of company sales, and this figure is projected to increase to 75 percent over the next seven years.
- Management harmony has increased considerably as management now chooses to base its decisions on market figures instead of personalities.