Culture takes time to change and we don’t know how hard they’re trying. A new CEO matters long-term but lower level management matters more in the short-term.

It wasn't just the CEO who was the problem at Uber.

That's not what I was suggesting either. We had a long discussion in a nearby thread about this; I got tired of it but check it out if you're interested.

Yeah, I found it only after I replied. I read through all of it now; I don't think I have any points to add to it.