Your studio apartment was expensive because of rent control. http://news.ycombinator.com/item?id=414330 Rent control does not apply to commercial spaces, so ceteris peribus they should be cheaper.
Wow. You haven't rented a storefront or an office, have you. Or paid water bills, or gotten permits to serve food and drink for a profit, or dealt with a zoning board, or...
Shhhhhh....you should like you actually KNOW how to run a business and make money, as opposed to just dreaming of cashing out your internet millions. Why cloud our fantasy with "facts"?