Old school was "shrinkwrap eula".
When you took the literal shrinkwrap off the box, you agreed.
Then it switched to "use eula" and the box that pops up containing the EULA that says "click to accept" and there's no other option but to accept...
That's the point you agree.
I don't think it's ever been "at purchase" at least in America. Because obviously gifts are a thing and purchasers aren't always users and more importantly users aren't all purchasers
A cracked game might circumvent those popups and/or screens, but I honestly don't know why they would put the effort in or if it would matter. And if it mattered probably varies a lot by country.