Even though this is still an ongoing legal battle, laws in each country are very different and might cause Uber business to be viable in some and not others. In Brazil labour laws are extreemly harsh and many say an employee costs between 50% and 150% more as compared to employment costs in other countries[1].

Also the social impact is different in different countries. Brazil is the only developing country in the list above. I live in São Paulo, and I can say before Uber, taxi cabs were a thing for rich people. Uber and it's competitors drove costs so low, poor people can now aford rides. I didn't find Sao Paulo stats, but in Rio, app drivers are 3x the number of cab drivers[2].

Uber estimates 1.9mi users might not be able to afford anymore if the law passes, amongst many other claims [3].

[1]: I won't pick specific sources, search 'custo brazil' if you are interested [2]: https://oglobo.globo.com/rio/pesquisa-mostra-que-aplicativos... [3]: https://www.uol.com.br/tilt/noticias/redacao/2020/03/09/nova...