ProTools is the industry standard. Love it or hate it. That’s the way it is. For music, and for media like movies, games, and television.

Professional studios and post production houses all over the world are deeply invested in the Avid and Digidesign infrastructure. I don’t see that changing.

I definitely know people running other DAWs at their home studios. Lots of options exist to keep things feature rich and cost-effective there.

I think people forget that the ProTools ecosystem consists of many generations of hardware coexisting with the software. Using proprietary protocols for connectivity. Lots of different styles of acceleration cards, and multiple generations of mixing and DAW controllers. I would assume supporting all that stuff takes time to beta test, Support, and maintain.

ProTools might not be the cheapest software, or the most feature packed, but it is reliable. And from a professional standpoint that is the most important factor when dealing with clients and deadlines.