There is no competition in localized monopolies. The privatization of the UK rail system was a blatant cash grab by the house of lords. (may not be accurate)
The way that I heard it described, the UK divorced ownership of the rail and the companies on it in line with EU rules. Ownership of the rail wasn't sold off, but operations and maintenance contracts were. Given how tight the operations contracts were written, the only way to compete was cost. It went very poorly.