I think this whole Uber situation is a good reminder to the valley that the "No Assholes" rule is still a good policy.
IMO I think Uber will eventually have to be bought by a car company or they'll have to go for a premium market because GM and others already want to get into the same exact business and owning the manufacturing is going to make it a hell of a lot cheaper for them.
You don't want the second kind because that's not how you build a sustainable business, but that's still quite different from risking your business so that some person can get personal sexual gratification.
Assuming "overworking employees" qualifies you as an asshole (not sure), it's not clear that a culture like that that pushes people to perform almost to their limit is not sustainable.