Is there a need for Game Session (Infrastructure) as a Service?

Hey game developers, I'm trying to validate the idea of building a Game Session as a Service or even as a Backend.

I imagine a lot of game developers want to spend most of their time building the game and the game mechanics not the multiplayer infrastructure, the game matching mechanism, etc.

As the founder of Chessroulette – a chess platform that connects people with camera over a game of chess, and I had to build the whole thing myself. It was fun but that took a way a lot of time from launching the product, and failing fast. Also, I mostly think in terms of turn based games or board games, not AAA games with intensive io, but who knows – maybe that could be achievable too.

The solutions out there are either very low-level like AWS GameLift or built into the Game Engine, but not much as a plug and play saas.
Any thoughts?