Not that it helps Everton now, but that 10 point deduction has really changed behaviours in the premier league transfermarket (so far, still 2 weeks left). What's clear is that owners can no longer assume that breaking PSR rules will just be a fine or transfer ban, there are clear sporting punishments. I'm hoping they do the same thing with Forest because everyone could see what they were doing was ridiculous, and they did it expecting to fail but only receiving a financial penalty.
The whole point of PSR was to get people to live within their means and grow revenue organically (harder for some than others which is where the fairness argument comes in and has some weight). You can clearly see clubs trying to trim squads and reduce wages and all of that is good for the game long term.