Earlier quoted context omitted.
I think these companies want to avoid making the drivers look any more like employees than they already do. Frankly, it seems to me that they are in fact employees, over which Uber exerts enormous control, to the point of spying on them, monitoring what they post on social media, what they say to customers about the company, supplying talking points, directing them to disregard certain local transportation regulation…
True - it benefits Uber immensely from a tax perspective (and benefits?) for them to be independent consultants. It's also harder for independent consultants to unionize.
[1] http://www.forbes.com/sites/robertwood/2014/08/27/fedex-misc...