Are you sure most restaurants aren't renting their premises in any case? Owning a property sounds like a massive investment before you're even able to do any business.

Of course the restaurant business is probably hit-and-miss and risky, and owning the premises might give you more stability, at least if you don't have a large amount of debt. It sounds to me like your stance might be quite cynical in the sense that almost nobody would try starting a restaurant if they considered owning their premises a necessity.