1. Well, my PS1 games still work perfectly. So do my PC games, though they're not as old as my PS1 games. I know discs don't last forever even if they don't get physically damaged but it clearly takes a long time. And by the time that happens, the games will be available via digital distribution and they will be very affordable. Most PS1 classics are 5€ which is fine with me. 10€ for some higher-profile titles is getting pretty steep for me but it's still not that bad. As for PC games, it's pretty easy to make backups.
2. I've heard of most of them. In fact, I believe I previously stated preferring Impulse over Steam because it doesn't force me to run a program in the background - a thing I was surprised at when I found out. Anyway, games I've bought on Impulse include Titan Quest expansion, Supreme Commander expansion, Trine, Sins of a Solar Empire. All except for Titan Quest were bought during a good sale. A decade is a bit much for smaller services, I wouldn't be so sure about it. But the bigger ones could easily go on for a rather long time.










