This is why I have never, and will never, purchase any media/games with an online umbilical cord. I either own a license that is fully within my control or it's no sale.
But this is also why I've been left so far behind (years now turning in to decades).
Well, come to the dark side then
There are plenty of easy ways to pay legally for a game, and yet avoid these restrictions.
So as far as I'm concerned, they can update their ToS whatever they like, they can't touch me (Single Player offline only, obviously).
That practice anyway really needs a class action suit fought under European law, because one-sided changing contracts terms long after payment has been made, without reimbursment, certainly isn't actually legal.
But since they choose to abuse their 300-Pound-Gorilla legal-department advantage over any single customer and do things that are borderline fraudulent because no one can afford taking them to court - well, two can play at that shady game.
Just to be crystal clear: This is not an argument for, I'm not advocating piracy. Reward developers and publishers for the excellent games they make. Just stuff their 1984 Orwell crap down their throats and liberate game executables from their shackles... (vive la revolutione etc.)