Think about it as starting with a product in a market. If you can't identify a market, then you should stop and do something else. A market doesn't have to be b

Think about it as starting with a product in a market. If you can't identify a market, then you should stop and do something else. A market doesn't have to be big and vague, it can be small. For example, people who develop apps with Angular JS (to use an example from my company). You can then expand from there assuming you have a vision that allows for that and the market isn't only as big as the small one you started with.