I generally agree with everything you're saying except for the idea that porn chicks are seeing what< i guess, the IG thots-turned-OF stars are making, and are now trying to follow suit. I think porn chicks were the ones who first saw the potential of OF and started using it this way. (You know OF was not originally meant to be a porn platform, and they've been threatening to purge the XXX content from it--which of course would be a deadly mistake, business-wise).
The porn girls were doing OF first, though when the IG thots got on, as well as all the random girls-next-door, they brought more attention to it. Another thing I think you're right about is that OF could very well replace the mainstream porn industry now that you got King Nasir and others investing in producing pro-level porn on there, as well as regular IG thots making the leap to full XXX.