For true FPV, the DJI quads are way too limited in many ways and are not exceptional at anything - they’re a solid high-end Toyota Corolla.
The DJI video system is very good, and does make its way into a lot of custom FPV quads. But it’s very heavy and high latency (also, just as bad: variable latency), so never used for racing. And it’s also too heavy for smaller aircraft. It’s also more expensive than all alternatives, once you get past about 3 builds.
Yeah, as I said for FPV and for non-video, people fly other stuff.
But for non-FPV and also for video (meaning the millions doing: content creators, news, advertising, corporate, event videos, etc - don't know what Hollywood uses) typically use DJI.