PH (and it's associated sites like redtube and youporn) will never recover. It will be similar to tumblr when they removed adult content. The fall wont be precipitous initially but it will have a lasting and major eventual effect. Without the amateur content, people will look elsewhere & once companies and pornstars realize it has fallen in popularity, they wont invest as much time and content into the site. Pretty soon, just like tumblr, they will fall from the mainstream spotlight. Tumblr is such a shell of itself it's a joke and PH may be heading in that same direction in the next year or two. PH has been around a long time and in recent years had finally completely distanced itself from the rest (xhamster & xvideos in particular - though both are pretty good sites in their own right) and sometimes when you fly too close to the sun, you get burned. PH had become so popular that they became synonymous with porn in mainstream media (similar to how onlyfans is now) that big porn companies and even regular pornstars saw it as the most viable of porn companies so PH ended up with the perfect mix (millions of great amateur content AND big companies and stars investing and promoting the site - something neither xvideos or xhamster has [the promotion aspect]).
PH is becoming just like Youtube which used content creators to really push their boom/peak a few years ago but once they got the big companies to start signing up and putting money into the site, they screwed over the 'little guy' by pretty much turning their back on the very content creators that really made the site reach its peak. Pornhub is doing the same thing (to the millions of amateur users that arent verified). They were quite fine with allowing all that unverified content when it was helping the site stay afloat. Now so many porn companies and produced-content on the site, that they think or no longer care about all the millions of amateur content that REALLY DIFFERENTIATED them from the others. Xhamster and XVideos will be glad for it but they will probably be wary of becoming TOO popular because then these self-righteous and often corrupt advocate groups will come after them too. It's all about making that SPLASH story. Sites like xham and XVid, while popular, arent mainstream media worthy so going after them right now won't give the egotists who run these groups, the boner of taking down a big company so they can get a pat on their back.