> Very few consoles, let alone games, last 15 years
The PS3 is older than 15 years! The oldest console in my home right now is an Atari 2600 and that's 45 years old and works just fine, as does its games.
Same with the Sega Master System, Sega Genesis, One of two original gameboys, most of the rest of the gameboy and DS lines, SNES, N64, Gamecube, the PS1, one of two PS2s (disk read issues on the larger one), and the PS3. all their games still work.
Honestly, the consoles and games that don't still work are the exception. One original gameboy has a blank line along one side the screen (still pretty playable), The NES still works fine, but some of the games don't save anymore (battery needs replacing), same problem with some of the later gameboy carts. If some of the SNES games have that problem I haven't run into it yet. Several controllers, joysticks, and DDR pads have died over the years and had to be replaced though.
I have a harder time getting PC games to work (on modern hardware) than I do getting console games to work. I expect I'll be able to hand most of this stuff down and the kids will be able to do the same for their own kids with many of them before they stop working. With maintenance (which I've never done for any of them) they could last longer. The PS2 with disk read errors and the dead batteries are totally repairable.
I suspect that the PS3 and PS5 will die sooner than most of the older consoles. They really don't make them like they used to. I blame higher running temperatures, lead-free solder, and cheap capacitors.