Posted November 17, 2014
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The only difference between Steam and GoG is with GoG you don't have to ask the hypothetical question 'what if the server shuts down' unless your backups fail. In that case then, the services are identical because if your backups fail (for whatever the reason) and GoG is shut down you have lost access to redownload the games that you paid for.
"When backups fail"... Yes, when my house burns down my entire library of books will be gone too. So what? At least Amazon can't come and take the books from off shelf. But they can take the DRMed books off a Kindle - see the 1984 debacle...
GOG can shut down my account. They can delete games from my account. But they can't come to my home and make the installers useless. Buy to own - on the frontpage.
Steam can make your installers useless. Try to re-install Skyrim from disk after your account was banned. It's built for exactly this kind of thing. All the auto-updating and achievements and stuff is just sugar coating on the Digital Restrictions Management. You don't own a thing - you're just allowed to use the software for the time being.