Match group (which owns many of the major dating apps) definitely performs anti-competitive and borderline illegal behavior. But tinder is far from a monopoly. The fact that they own 22 dating app companies is testament to how easy it is to break into that market.
It’s a testament as to how easy to break in. It is not a testament as to how easy it is to turn a profit. These companies get bought by match because they’re not super profitable and able to compete until end of time against match.
To be fair, it's hard to expect to make much of a profit when there are 22 companies out there already selling the same exact product. Online dating is pretty much dead as a direction for new startups to pursue, one big red ocean at this point, and there's no clever play left in it that would set a new players in the space apart.
I don't see how consolidation into a couple of major players swallowing most of the companies in the space is avoidable. It's Booking Holdings vs Expedia Group all over again.