Owning a studio is generally not a good business to be in, especially if you want to have any energy left for your own teaching. Usually the best solution to this is to rent only the space you need. And if you have to own a studio, hire the graduates of youth competitive programs. Or better yet, rent space to other teachers who do not work for you. The idea of being able to sit in the office, in meetings, and conduct training session and have money flow in just does not work from a dancing perspective - it may work as a business plan, but not as a business plan and also a dancing plan.
I get to practice at some really nice studios - some quite beautiful, or modern, or with floors of just the right speed. I'm pretty sure they aren't paying their rent with my floor fee ($2 for the whole day). As much as I might feel aggrieved at students being charged $100/hour for lessons with a trainee, their fees are paying for the floor that I enjoy so very much.