Tempe, Arizona's foray into community and municipal wireless has not worked out as expected. Like many other communities that have tried the same thing and have also failed, Tempe tried to avoid spending any money. They simply granted an untested wireless firm access to city lightpoles and structures for wireless equipment. The private firm had to bear the entire cost of build out. The wireless system was also not seen as reliable as a wired system, and the wireless firm has not been able to attract many subscribers.
The lesson learned is that there is no free lunch for community broadband. Communities that spend very little are getting very little in return, and if all of the risk is left in the private sector, the private sector won't come or won't stay long. Another lesson is that building out without a solid business plan to attract customers is also a non-starter. The right approach is to target underserved areas and/or to be able to offer innovative services that are not already available from other providers.