> Tinder ends with plenty of long term relationships
Sure, and some people go there looking for that. Most go there looking for short term enjoyment and possible long term relationships. That doesn't map onto the cofounder search. There is not much value in having the equivalent of "a couple dates" with at potential cofounder. And some people would actually see it as a negative, if they're worried (rightly or wrongfully) about their idea being stolen.
Sure, and some people go there looking for that. Most go there looking for short term enjoyment and possible long term relationships. That doesn't map onto the cofounder search. There is not much value in having the equivalent of "a couple dates" with at potential cofounder. And some people would actually see it as a negative, if they're worried (rightly or wrongfully) about their idea being stolen.