+ It doesn't necessarily take more effort to build a product that lots of people want vs a product that very few people want.
Again, sounds obvious, but I see lots of startups exercising huge effort to build complex products against very small markets.
+ We all suffer from hindsight bias -- for every Apple, Microsoft, 3M, and HP, there are thousands of companies that screwed up the progression you're talking about and failed that we've never heard of.
