Of course wealthy Hollywood celebrities support unions: they make it harder for outside talent to compete with them.
And they absolutely do limit the work that union members are carrying out. To name a fairly recent example, that's how Dr. Horrible's Sing-along Blog came into existence, making it a web series allowed Joss Whedon to still make something without running afoul of the Writer's Guild strike rules.
And they absolutely do limit the work that union members are carrying out. To name a fairly recent example, that's how Dr. Horrible's Sing-along Blog came into existence, making it a web series allowed Joss Whedon to still make something without running afoul of the Writer's Guild strike rules.