[Jugurtha]

>Finally the passion for the idea trumps the desire to chase money and your product will eventually suck.

I think his point is that the ideas being shared are simple enough not to require that much passion to implement, and the goal being not doing something better, but something economically viable (good enough to generate income).

The obvious counter-question would be: why would people use the worse copy instead of just using the superior original? The answer is that it could be the case for a variety of reasons, one of which is cultural relevance, the original filters geographically, is not internationalized well, people do it differently in different regions, etc. After all, you find companies doing similar things in the same market, it only makes sense there's chance of finding other companies doing the same in different markets (given the conditions to implement the idea are already in place: not that easy pulling an Uber/Lyft in a country where mobile broadband and payment haven't matured).