It's strange that you explicitly brought up Uber and still hold this opinion. Out of all the companies, they have most aggressively skirted labour laws in every country they are in, and have been selectively banned from some countries and cities due to their continual breaking of the law. Not to mention lobbying efforts to minimise the effects of labour laws.

They didn't start as a company for the sole purpose of exploiting legal grey areas, but they certainly have consistently done so since their inception.