What is a dating websites incentive to couple people up? They have seemingly reverse incentives too. The better a dating website is the less potential users it might eventually have.
I don't think that anyone here is trying to say that this is the only industry in existence that has reverse incentives (in that their success could limit their future).
I think it's a bit of a stretch to compare online dating to an industry which, quite literally, destroys peoples lives and often unfairly targets disadvantaged groups.