I think the expectation is that many of these jets will be sold to people that currently are flying complex singles and piston twins. They would tend to already have hangars.
The other major segment of the VLJ market will be air taxi. These will roam the country much like fractionals do today and generally won't be "based" anywhere.
Another segment that I don't think many expected could be legitimate corporate flight departments. I just read about a company that operates at least one Global Express, just bought two Eclipses for super efficient short haul work. I could see this becoming a trend, opening up the "company airplane" to lower echelon employees that need to travel a relatively short, but time critical trip.
If I were in the market for one of these things, I'd be seriously considering the Citation Mustang. Cessna already has a serious track record and the maintenance support structure in place. Everyone else is just playing catch-up.