Typical, misguided Microsoft
I look after (or advise upon) half a dozen small businesses in the area. We knew SBS was being killed so over the last 9 months we've upgraded all our SBS2003 and SBS2008 installs to SBS2011 (the final one was done a week ago). All are on new Dell hardware, all of which was purchased with 5 year warranties (one has a 7 year warranty). So hopefully we are safe for a few years.
There is absolutely no way we will EVER put anything into the cloud. Firstly, we don't know who is looking at it (and the Yanks seem to feel an implied right to look at anything). But more importantly, all these half-dozen sites are on broadband connections of 5Mb or less, so the prospect of anything bar emails going up and down the line is nonsense. Cloud storage for files and backups? You must be joking.
So that's one "alternative solution" ruled out. The second - Server and on-site Exchange - is far two costly. With SBS it's all in one; with Server + Exchange we'd need two servers, Server CALs, Exchange CALs, two sets of backup drives etc. For SMEs it's not going to happen. We don't use Sharepoint and think it's cr4p, but we use Exchange heavily, and SBS was the most cost-effective way to get both products on the same box, plus WSuS and backup configured as a bonus.
Once again, Microsoft has cut of its nose to spite its face. We've used SBS since SBS 4.5, then 2000, 2003, 2008, 2011 - a gravy train for Microsoft. But now that SBS has gone we will be sticking with SBS 2011 until the servers fall apart, and then we will see what's out there.