Not really. It's undeniable that technology reset power structures, but ultimately it just ended up with new power structures/new people made the gatekeepers.
Just look at the people whose success was broken by Youtube overnight. Youtube/BigTech won over Hollywood, not the people 100% beholden to Youtube. Under Hollywood people still got their residuals. Under Youtube, next day you can be cut off completely.
Power structures still exist for sure. But objectively, there are tens of thousands currently making a living from YouTube who would've never been able to become entertainers if Hollywood was the only game in town.
The barriers to entry for entertainers have never been so low.