It could be argued that these criteria lead to the opposite conclusion.

Many producers: maybe not, but most countries have at least 3 [1]. Not worse than e.g. major grocery store chains or gas stations. Many consumers: definitely Product uniformity: significant--I don't care how my 1 mb of data or 1 min of talk is routed

The key anti-free market characteristic is arguably the limited amount of frequency spectrum, which is allocated via centralized auctions. Yet I don't recall hearing similar complaints about the radio or TV industries in Europe.

A lot of the arguments in this thread are that the market is inefficient and therefore must be regulated, but is this the right path if the inefficiencies are due to regulation in the first place?

[1]: https://en.wikipedia.org/wiki/List_of_mobile_network_operato...