Now I predicted this happening last spring -- the fanbase has already taken a huge hit, and then another bad season without a rebuild and... -- but who would have ever thunk it 5 years ago? And its a major problem too. Sacramento's one attraction as an NBA/major league sports town is its fanbase. With no corporate presence, its how they have to earn their money. When the fans abandon the old barn, what's the point of staying?
P.S. this whole "as a percentage of available seats" stuff a) doesn't really change things (still 3rd worst) and b) is irrelevant anyway. Its only relevant on the high end if you sell out your 18,000 seat building and another team sells out its 21,000 seat building. On the low end having 10,000 people show up in a 18,000 seat building is no different than having 10,000 show up in a 21,000 seat building. You still only have 10,000 paying customers, and there is nothing at all preventing more from showing up aside from lack of passion for the team.