A lot of good points being chucked about. I would LOVE to find a place and run my own site but with work, family and Uni currently there's no way I could fit it all in.
I think its realistic to certainly run a site and break even, possibly even make a small profit for investors and/or staff (I think it would even be possible to run a site on a part time basis and not take a wage for myself).
I just wish I had known about Airsoft a few years ago when I would have been all over starting my own company...