Google is NOT going to expand any further. They've already said that KC is a test bed and we know how far those go with Google. And now since they're a public company, those nice shareholders are going to want that investment back into the company before it even does anything else.
Google got that 2 year contract for a reason, to sell it at the end of 2 years.
Verizon, AT&T, and the cable companies will sue sue sue and prevent Google from breaking their monopoly. They refuse to invest any long-term project and sure as heck do not want ANYONE else installing their own either.