However, the way these walled garden DRM'ed online app stores work, once something is taken out of circulation, it's just GONE. You won't be able to buy an old iPhone 5 10 years from now and go download an old game.
My son really liked this old Simpsons game on the iPhone, but now there's no way to run it, or even find it in the store anymore.
This isn't an Apple specific problem, but I wonder, if future archaeologists will even be able to find anything left of our culture, as it digitally disappears behind upgrades and silos.
One thing I love about the Web, is we can have sites like Archive.org. And I can still view the very first Web page ever in my browser. Spacejam still works!
But what if the first iOS games I loved on my original 2007 era iPhone? Will there be an Archive.org emulator? Unlikely.