The problem might come when Joe Cheapskate wants to pay pennies but still expects the royal treatment, but that's another topic.
Also Ryan Cheapskate believes he can get away with subpar treatment of passengers and staff because they paid so little.
The UK CAA's letter after the " rostering mishap" that had them cancel 18 000 flights:
https://www.caa.co.uk/uploadedFiles/...r%20270917.pdf
But as usual, I guess no penalty was ever enforced. I think they could get away with murder.