Non-London view here so places where private hires/minicabs have always been the main form of taxis and black cabs almost non-existent. No or little tension between anybody
It’s my honest opinion as someone without a car and who regularly uses private hires that Uber has actually improved safety/quality. When I was a student in Birmingham up to 2012 I had countless issues with the local firms - not turning up, erratic driving, overcharging, once even picking up multiple people en route then charging us both! Some of them used to pick up drunk students without pre-booking from the street regularly, saw it with my own eyes. Returned to visit some old friends in 2017 and sure still problems but it seemed a more accountable service with Uber.
Of course some places have good local firms, back growing up in Blackpool my grandad drove for a respectable firm and such firms are thriving launching their own apps etc.
I also use Uber in Glasgow regularly now and had nothing but decent service, vast majority of vehicles here are licensed by Glasgow City Council or Renfrewshire Council. I will also use the local firms especially for airport trips and don’t notice much of a difference, prices are roughly in line with Uber if not a little lower.