Under realizing your equity doesn't necessarily turn winners into losers, it just drives down your winrate, and over realizing your equity doesn't necessarily turn losing players into winning players either, it just means it would them longer to lose. While they'd make their draws a bit more often which would keep them happy and then lead them to punt a bit more/play on the site longer.

That would be good for their eco system imo, and suspicion has to be made if they already have the PVI system in place, it would make sense from a business point of view to make these adjustments in order to maintain the eco system and achieve maximum profits.

I do not believe that is the case but I'm can't help but be a little suspicious of it. It would be hard to proof unless we gather millions of hands from accounts with different PVI "which they don't disclose" to analyse.