If you are looking at it that way, you should not buy any game with an online component.

Way ahead of you. I generally avoid games that make me rely on other people for my fun anyway.

That said, hypothetically, I still might ‘buy’ (i.e. lease) a game even if I know that it’ll be shut down eventually. It depends on the game. I even bought into the early access for Assetto Corsa Evo, although I am slightly uncomfortable that I don’t know what the EOL plan is for that. At least it has an offline mode built in.