I don't think that this is still true - most artists switched to CSP, Procreate, various other programs. There isn't really an industry standard any more.
It is utilized heavily within Animation. Universal, Disney, are all heavy users of Adobe, unless that's changed in the past two years.
source: I had a gig for an medium sized animation studio, a large amount of artists all wanted and used adobe.
I don't think that this is still true - most artists switched to CSP, Procreate, various other programs. There isn't really an industry standard any more.