Have you seen the realstate market? Competition is all there is. The food market, probably the oldest market, is full of startups and more enter the space each year.
There is no shortage of untapped competition in any industry.
Unfortunately it's not possible to get major cities to work, at least not the Californian ones. The second best answer is to build more major cities. The irony of course is that the next major city won't be in California either.
