park_84: A single installer could detect which Windows version it is running on and install or configure accordingly
if that gets the job done then that's fine
park_84: I guess that support for old Windows versions won't last forever, eventually it will have to be dropped.
It's true, but you can cease updating products for the OS - I've no question about that.
However, I've always assumed (perhaps wrongly) that as long as GOG exists I will be able to download my games. If there comes a point where I don't have the installer for a game I bought, which was sold as compatible for my OS, and GOG have removed it so I can no longer download it, what then? I've paid for something I can no longer access, would that be entirely my fault for not having made adequate backups? or would GOG be at fault for arbitrarily withdrawing a service?
Should the old installers be archived somewhere so that they are available forever?