I think Elon Musk would watch Netflix. The question is not if he watches TV. The question is when does he watch it.

My guess is the top of the line productive people use recreation as a way of recovering from stress and fatigue. Other people seem to tire watching things like TV.

I don't know about Netflix, but he said he likes Overwatch, and, if I remember correctly, he played Kerbal Space Program.

with the amount of money he has , maybe he does ;)