The music is recorded, thus they need a PPL licence. PRS is for music played live.
Actually technically you need PRS license if you have one of those rickshaws and playing music. London black cabs where the driver is playing music and the passenger can hear it also need a license. The PRS who I have dealt professionally (as well as below) with will tell you those are public performances of their members music and therefore needs a license. They have been known to call businesses that don’t have a license and tell them they’re in trouble.
I have been called at home, back when I had a landline number and the person on the other end told me they could hear music. They then explained that I needed a license from the PRS to do so and they’d be happy to charge me a vast sum for it. The number I had been given when I moved in was for the old Red Lion pub down the road which had closed less than a year previously. I pointed out that it wasn’t a pub number anymore, it went to a private residence, the pub had closed and I was going to play whatever the hell I wanted.