Well I bought WC2 already and have the files. That's the best part of GOG, you can just make your own backup.

I think with hard copies going away, the ability to make backups of what you buy should be protected by law, at least for software that is no longer supported (of course one side effect is that all games become services, but there have been single player games recently that prove it's still a good business model).

We have seen enough cases of how digital copies are ultimately a way for companies to "erase history", so to speak, and this is detrimental not just to consumers but the wider culture. Hard copies was a way to guard against this, but ultimately it is all software anyway, and digital copies should provide a way to truly own what you buy (if it's a one time buy product).