I only build things I actually want to use myself. If I, after research, find that my idea has already been done it simply means that there's an untapped market

I only build things I actually want to use myself. If I, after research, find that my idea has already been done it simply means that there's an untapped market where either their product sucks or they're bad at marketing. Otherwise I would have already have known about them and I shouldn't need to do research to find it.