Leadership starts with the top and the values of the company. There is a huge gap between the CEOs of Microsoft and Apple and Zuckerberg who has never understood the value of respecting boundaries. That culture likely permeates the whole company seen in their handling of partners, API permissions, privacy settings etc..
I doubt that Zuckerberg is able to fix the issues as he is at the root of it. Looks to me like the situation at Uber but with FB there may still something to be saved if they are moving fast.
The most obvious sign that this culture permeates the entire company is the open plan offices. Employees who can tolerate this sort of environment seem less likely to be super privacy conscious types.
I don't think Zuckerberg is as actively scummy as Kalanick was. Fixing this requires being very actively ethical and I think he's just falling short. I don't think Zuck is incapable he just needed this kick in the pants to do something.
I doubt that Zuckerberg is able to fix the issues as he is at the root of it. Looks to me like the situation at Uber but with FB there may still something to be saved if they are moving fast.