Growth in skateboarding is inevitable. There will always be a corporate element to skateboarding based on trying to expand skateboarding as much as possible and sell as much product as possible. There will also be a more underground alternative to the corporate side. There will be Street League, Berrics, Olympics, Cariuma, etc and there will be Limosine, Sci Fi Fantasy, Last Resort, etc as an alternative. Eventually people will get tired of the current crop of "core" brands, and new brands will pop up.
It's like music. There will always be the mainstream side that specifically produces music for the algorithm and generating as many streams as possible, and there will be artist that make music solely for a niche audience. It's not necessarily good or bad, but it's easier to ignore wack shit, and specifically focus on the cool shit, and due to the growth the general public is more accepting of skaters, cops are a little bit more charitable to skaters, and more [good] parks pop up.