If Comcast can’t make it in the wireless biz, who can?

Comcast tried hard to become a mobile operator, but it failed to find a way to make the business work — at least that’s what Comcast EVP of public policy David Cohen claimed in a fascinating blog post last week describing why it and its cable buddies decided to sell their spectrum and shack up with competitor Verizon Wireless. That admission is a surprising one to say the least, and if Comcast is being forthright it also raises some troubling questions about the state of the U.S. wireless industry. If a company with a $71 billion market cap and deep roots in the telecom service provider business can’t make a go of the wireless business, what hope is there for any newcomer?