I've been collecting 360 games for a while passively and just started PS3 semi-passively. I have no reservations about these games not being able to be played. I have a completely professionally refurbished early PS3 fat that's backwards compatible with PSX and PS2 and a 360 Slim that is a tank. The good news is the 360 will likely be the cheaper of the console to buy and collect now and in the future, plus a ton of the games look and play fantastically. Oh, there's the backwards compatibility with an XBOX One for a good deal of popular 360 games too that helps.
I haven't got in to the Wii U yet and most likely won't now that the prices are starting to get too high (simply because Nintendo branded products are always overpriced based on fan demand). Glad I have a Switch so I can avoid having to buy that after the system gets discontinued and at 5 times the price. Hah.