Exactly. As horrible as it is, sharepoint rules this area and probably has an install base that dwarfs base camp. When the average corp person thinks project and file management they think sharepoint.
Most programmers probably work at either BigCo enterprises (banks, insurance companies, telcos etc) or at "startup" type tech businesses or freelance agencies.
There are other industries that contain a lot of small businesses and probably employ very few programmers, think restaurants , local shops , small law or accountancy practices etc.
These guys probably aren't using sharepoint, most of them are probably using excel spreadsheets combined with paper.
I'm not sure how many of these guys are using things like basecamp but they a lot of them probably should be.
