I took out my 360 for the first time in over a decade this week to play MvC2, and it was a gigantic pain in the ass.
After about an hour of trying to find and reactivate the now-delisted game, my 360 randomly decided to die, just as I got things sorted.
So it took another two hours for me to transfer my account and stuff over to a spare 360, set up all the software, update, and get everything working.
That era of DRM is super weird, and I bet a majority of casual 360 owners will simply just never bother jumping through hoops to be able to access all of their old content. It’s a good time to be a physical media collector, I guess.