When I have reported black cab drivers misleading passengers, lying about pricing and regulations or bus drivers driving dangerously and being rude to everyone, TfL are totally uninterested. They give the impression that they know the scams operate and don't care. It's an interesting comparison with my Uber experience, which has been almost flawless and issues are usually fixed by Uber themselves promptly.
Being "innovative" doesn't mean that you have full reign to operate unethically.