I think they do need to raise the minimums for breeding, but agree with @gyroprotagonist that taking Nak Genesis minimums all the way up to .48 will not have the result these huge stables think it will. It would increase the amount they get for a cover, but decrease the total number of covers they are getting.
It will definitely alter my plans for breeding. It's so cheap right now to breed my Buterins that I'll breed every time in the hopes that I scratch off a winning lotto ticket and get a good racer. I sold off 3 of the 5 horses I got from breeding my genesis filly in the last round and at least doubled my investment on all of them. I kept one of the fillies I got from that round to breed for lotto tickets, but will sell her off if the stud fees increase this much.
I bought a bad ass Legendary Buterin filly last week to breed with my strongest racing stallion - https://knowyourhorses.com/horses/32194 she won back to back races in class III last night. Currently at a ~17% win rate and 39% ROI. 24 more days until I can breed her with Despicable Lemon. Lemon has been feasting on all the new class V racers too, he won 3 races yesterday including one that paid out $97.