-- Is there a large population of people who historically have not had the money, equipment or skill to do this thing for themselves?
-- Are there customers at the low end of the market who would be happy to purchase a product with less (but good enough) performance if they could get it at a lower price?
-- Is the innovation disruptive to all of the significant incumbents in the industry?
There are plenty of successful businesses that are not disruptive. But if you are taking on companies that are a hundred or a thousand times your size, you've got to have some reason to believe that the competition can't crush you. A disruptive company uses a strategy that cannot be emulated by the incumbent lest they destroy their core business.
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