I haven't read any of the above posts (oops), but if you're intending to start one, count me in

But I hope your commercial gym doesn't ban old school lifting ): Me no love whiny old instructors!
E.G. : West gym at west coast recreational centre. now THAT's a real gym i'd like, as much as we know that it won't earn as much because it's kinda ulu. Another gym i know of and was interested in was Coach Jon's Genesis facility, where functional strength is the name of their game!
Edit : Just so you know, gyms in Singapore don't earn a lot. In fact, some of them even face deficit problems, except the power players like Cali and Fitness First.