It still works :)
A couple of months ago I sent an email about a bug in the iBooks iPhone App directly to Tim Cook. A couple of days later, an Apple PM responsible for the iBooks App sent me a mail telling me to describe the problem a bit more precise. I offered to take a video and sent it to him. It went back and forth a bit (but always the same person!) and in the next iOS patch the bug was fixed.
Bill Gates did too:
https://blogs.msdn.microsoft.com/oldnewthing/20091123-00/?p=...
Satya Nadella does not. He is busy "engaging with cloud-first experiences widening the mobile satisfaction among diverse platforms across the boards of world-wide decision makers". Or something like that, the point is: CEOs like him are completely missing the customers' reality. They are, literally, in the clouds of corporate nirvana until customer base is starting to die off.
http://www.cnn.com/2011/11/22/tech/innovation/jobs-excerpt-c...