Online Multiplayer games does not make sense, unless you use it for chatting and not gaming.

I think that online multiplayer games does not need to exist as most games could be played offline with AI and with higher enjoyment also.

I think the reason a lot of people don't enjoy AI offline instead of multiplayer games is because as a capitalist society we associate multiplayer games with higher joy, due to the huge amount of ads and streamers targeting teenagers to show them how much fun they are missing by not playing in online multiplayer games. I had met a variety of people with different ages and a lot of the older generations prefer offline games and consider it the norm.