Think of your favorite movies.

Now imagine your kids never being able to watch them.

Same for books.

Same for music.

Games are an art form distinct from the above, and can in many ways be more powerful than they are. I've played games that toyed with my emotions in ways few movies can.

As such, they need to be preserved just as all the above categories.

I'm incredibly glad I can still play most of my 80's and 90's DOS games. People playing games now should still be able to play them. At least the ones that can be played "locally".

You should be able to sell something and then take it away when you're tired of it.

Would you feel the same if your phone permanently bricked itself because the vendor decided it was out of date and they just don't feel like supporting it anymore?

If you sell a product for money, you don't have the right to take that product away and keep the money.

Then communicate that lifespan front and center. One game I can think of that did that, afair, was "the cube" from peter molyneux.