I'd say that Hollywood is the north-American content industry focused around Hollywood California, but including New York, Vancouver and anywhere else where movies and TV is produced. Netflix is a major content producer who uses the same people as the MPAA backers. Youtube doesn't produce content in the same way, but they are very influential having stolen things like Music Videos from the likes of MTV. These non-MPAA entities compete in the same space but have very different opinions than those who support the MPAA.

My point is that the MPAA does not represent these other "Hollywood" content producers and shouldn't be described a representing any content producers beyond the five members.