I think it's like music; everything has been democratized and splintered by access. So now there are only a tiny few truly global music stars and countless microscenes; to some people Oli Sykes is the most famous man in their universe but tons of normies have never even heard of him or his band. I think same deal has happened to porn, especially with the rise of "farm to table" amateur porn/camgirling. More fish in smaller oceans.