Sanity Check: Is Your Addressable Market Size Realistic?
A significant number of entrepreneurs confuse the concept of market size and addressable market size (an addressable market is the total revenue that your company would generate if it captured every single viable revenue generating opportunity). Even those that understand this distinction often don’t calculate the right number.
Addressable market estimates are typically pretty soft in the sense that they are a compilation of estimates. However, this doesn’t mean that they aren’t extremely valuable for investment decision making. If each assumption is reasonable, meaning in the range of realistic outcomes given the best available information, then the output of the exercise will usually generate an answer that is in the right order of magnitude (meaning it has the right number of digits). It is helpful to know that if the company captured every revenue generating opportunity it could realize revenue in the millions, tens of millions, hundreds of millions, billions or more.
Where many entrepreneurs go wrong when they are calculating their addressable market is that they don’t get the assumptions right. There are two types of mistakes that are most common:
- Assumptions are not sufficiently refined: Entrepreneurs often exclude some of the logic that goes into this analysis, which more often than not shrinks the output of this calculation. For example, an e-tailer selling t-ball bats isn’t going to sell bats to every person in the US. Not everyone plays t-ball. So, when this estimate is being created the US population needs to be refined by another factor, the percentage of people that play t-ball.
- Assumptions are simply over-estimated: Entrepreneurs sometimes inflate inputs into the addressable market calculation. Demographic segments are often enlarged and CPM rates overstated. If you feel compelled to demonstrate the best case scenario it’s always best to create a low and a high case, which will demonstrate the range of possible outcomes. This approach will highlight upside while letting investors know that you are aware of business realities.
There are a couple of key reasons to be careful not to make these mistakes:
- First, good VCs will catch the errors.
- Second, when they catch the errors it will raise questions about management competency.
If your company doesn’t fit into a VC’s thesis because the addressable market is too small, don’t artificially manipulate the market numbers. You are better off trying to raise money from other parties that will be interested in your company (such as angels). Trying to force a square peg in a round hole can hurt your credibility























