I buy on GOG where I can and actually archive the offline installers of everything I buy. Seems crazy, but I've got old games on freaking CD-ROM that I have gone back and enjoyed, so it's not ridiculous to think in a decade I'll want some game that you can't get anymore.
There's piracy too, so things will always be around, but it's easier to keep things I have already.
When I got a new computer, I was still able to download the NBA 2K16 I'd bought on Steam years prior and had since been delisted.
If you bought it before, you can get it again.
Which is good in this case, as that was the last truly great 2K.
I buy on GOG where I can and actually archive the offline installers of everything I buy. Seems crazy, but I've got old games on freaking CD-ROM that I have gone back and enjoyed, so it's not ridiculous to think in a decade I'll want some game that you can't get anymore.
There's piracy too, so things will always be around, but it's easier to keep things I have already.