This is always my thought whenever I see a conversation like this come up about Uber. I understand they're all important issues, but why care so much about whether their drivers are employees or contractors when they're intending to lay them all off ASAP? They're just buying time and taking market share until self-driving cars arrive.
Don't remember the link, but Kalanick was recently quoted about how he'd buy a bunch of Tesla self-driving cars in 2020. Whether it will be Teslas or not, I believe it's clear that their whole strategy is to move to self-driving cars as immediately as feasible.