In the UK you have to also pay fees up front (and pass certain tests) but the fees are relatively modest[1] and the tests include things like knowledge, medical fitness and criminal records, which all seems reasonable. This legally applies to Uber drivers too, although whether it is enforced seems to be in doubt[2].
(I'm not talking about London black cabs which operate on a slightly different system)
[1] The fees for my local council are in section 10 here: http://www.dacorum.gov.uk/docs/default-source/licensing-docu...
[2] https://www.standard.co.uk/news/transport/uber-may-face-21m-...