One of the things that drives me a little crazy about Steam is that there was actually an earlier digital game store (run by Stardock IIRC) that made the launch

One of the things that drives me a little crazy about Steam is that there was actually an earlier digital game store (run by Stardock IIRC) that made the launcher and other tie-ins optional. That one didn't take off, though. Steam required a tie-in to the launcher, and it took off. I would've much rather had the launcher and all that be optional, but I'm guessing that requiring Steam for games like Half-life 2 probably was the smarter move (from a profit perspective) than having it be optional, so that's the way the market went.