Why didn't the EU block companies like Expedia taking over the traditional travel agent business, why didn't they stop Amazon and others from selling books online and stoped hundreds of traditional bookstores from closing, why didn't they stop VoIP and chat companies from closing, etc.
I'm not a fan of Uber as a company/culture, but the value they provide to me is huge. The traditional taxi driver isn't willing to change, admit that their license/medallion is a barrier to entry designed and speculated by them. If they don't want to change others will come and provide a better service/product.
To me, Uber is a necessary evil. I will continue to use them night and day... until a better service pops-up.