This is easily solved by charging the users of the shared infrastructure a rate based on their usage, with penalties for breakdowns. Australia had a similar pr

This is easily solved by charging the users of the shared infrastructure a rate based on their usage, with penalties for breakdowns. Australia had a similar problem when the rail infrastructure part was split off into ARTC. Some dodgy operators started up with clapped out old locomotives that often broke down. Those operators didn’t last long when they had to pay fines for blocking the track.