The market always corrects itself. Billions of dollars in this defacto minor league we call collegiate sports. And in BILLIONS I mean the hundred variety. These athletes not being allowed to benefit monetarily was never legally sustainable when the number was mere millions, and the stakes have ratcheted up. NIL was not intelligent design by some higher power…it was capitulation to inevitability. The monsters who mastered the previous dirty system understandably resisted NIL because the relative pennies on the dollar to lock up the best every year doesn’t work. Arch and Nico aren’t in Bama or UGA and that genie isn’t going back in the bottle. They’re not going away and they’re at the top…but the distance has tightened. What anyone “thought” was the intent is immaterial.
It is a little premature to evaluate NIL's impact on competition, parity, and the distribution of power/talent.
The OP appears to be basing it off of recruiting rankings. In spite of ruffling BOT's feathers more... which I'm kind of growing fond of doing... NIL applied to 4/5* recruits PALES in comparison to what happens when the better players actually show it on the field (regardless of the stars they were given) then hit the portal. THAT is where the real battle will be fought. That obscure 0* who started his college career at a DII school... now becomes the "prize" portal player that everyone throws NIL bids at.
The impact on who gets the mythical "best class" on signing day may never be all that significant. Getting talent initially will always be important. However the portal creates another significant means for getting the best talent... without the risks of overrated HS players. In fact, a much better strategy for NIL organizations might be to skew their spending toward the portal- the guys who have actually PROVEN their worth at the college level. I think we'll see the impact most when talent is rebalanced to the 20, 30, or so programs that support a strong NIL.
I don't think the "parity" we're looking for is between 131 teams. I think it is between the teams in each conference with strong booster and fan support. Oregon, USC, and UCLA appear to have that in the Pac12. UT, Bama, Auburn, LSU, TAM, UF, and UGA are the teams that definitely have it in the SEC. Clemson does but others may not invest in football that much. OSU, Michigan, Wisconsin, PSU, Nebraska, and possibly even Purdue or MSU can do it in the Big 10. Once OU and Texas move there is going to be a huge void in the Big12... I don't honestly think they should be considered a P-5 conference after that move.
Another thing this all does is put a premium on leadership and honesty. Coaches who used to lie to kids in recruitment can't get away with it any more. You can't make playing time promises like before without taking a huge risk. You have to treat players with respect. You have to put them in a position to achieve their goals whatever that might be. A culture that players want to stay in is no longer optional.