If you want to play new games that require you to download patches and all you have is dial-up, you'll just have to cope until an upgrade is available.
So... if I was living in an area where
the only internet service avaliable is dial-up... I can't play a Steamworks game just because I'm not living in an area with high-speed internet? You wonder why people don't want Steam integrated with games?
Even if a game doesn't require Steam, games are becoming so DLC heavy and patch-dependent, you'll need a high speed connection anyways if you want to continue gaming.
Know what I did with my internet-less gaming computer whenever a patch came out? I downloaded the patch on my parents computer, and saved it to a flash drive, or burned it to a CD and brought it to my computer and installed it.
With Half-Life 2? I had to unhook my computer, carry it into my parents room, unhook the ethernet cord from their computer, hook it into mine, connect to steam, download the patch, unhook the cable from my computer, plug it back into theirs, carry the computer back into my room, hook it back up, and then enjoy the patch. It was a [censored] hassle, and there was nothing I could do, because I was unable to get internet in my room. Luckily we had high-speed internet. If we had dialup, I'd just go to a friends house or something, and download the patch. I'd be pissed off if I had to haul my computer to a friends house.