For Idol - yeah, not good for you due to your I-Net connection.
For many people - they just seem to have problems w/ Steam for whatever reason - whether it's offline mode not working; VAC ban; blob file won't boot (I had that one before); etc etc.
At least w/ Steam, you do have offline mode - so you can play the game offline, if need be...as long as they don't have issues w/ getting offline mode to work, of course.
I wonder what Ubi is gonna do about past titles like AC2 PC, Settlers 5, and SC: Conviction. They gonna remove the "Are you online DRM check?" Or what?
Personally - I'd rather Ubi just force a damn disc-check.