Earlier quoted context omitted.
This isn't the reason. The reason it's necessary is because players want to be able to play with/against other players around the world. Matchmaking requires some form of anti-cheat. Running your own server as admin can't give you the degree of competitive global ranking that players enjoy today. And cheating is an arms race. It's just hacking. You either preserve game integrity or you're going to have cheaters.
We lost a lot of other things as well. Like modding and especially maps. It doesn't matter how good the game developers are, someone out there is could make a better map. The studios took control of everything, and their answer is to rootkit our computers, and to buy more DLC if we want another map. Personally, I don't accept the premise that such studio control is necessary for me to have fun playing a game. I espec…
You reject the premise that such control is necessary for your idea of fun.
But millions of players enjoy ranked matchmaking enough that without aggressive anti cheat you will wind up with cheaters.
I hate the root kits as well, but if you spend any time playing Valorant vs CS, you will see the difference. If I play CS consistently I'll get cheaters once or twice a week. In Valorant it's almost unheard of by comparison. It sucks, but that's just what's happening.
Do I wish I at least had the option in Valorant or whatever to host a server? Absolutely. Do I think they use the rootkits maliciously? No, generally not. Do I think studios are disincentivized to provide server hosting due to DLC or microtransactions? Definitely. But I also think there's often also a game integrity component. All of these things can be true simultaneously.