Just wanted to pop up and add on this point that Manchester having regulated buses isn't something that's just randomly happened, it only came about after years of campaigning by Better Buses for Greater Manchester, a campaign that was backed by Unite, Unison, GMB and Acorn among others:
Our buses are just not working, but we have a chance to change that. We need public control. Sign the petition to fix the bus system in Greater Manchester.
betterbusesgm.org.uk
Other factors at play there as well, like Burnham is, I think, a fairly savvy opportunist who'll go with whatever he thinks will be popular, which depressingly makes him much better than the likes of Reeves, Streeting or Starmer who seem to have a real ideological commitment to always doing the most free market thing possible. But a better regulated bus system in Greater Manchester was at least in part won by passengers organising to demand it, which is something that could be achieved elsewhere.