Less than half the US-listed public miner hash-rate could be a favorable outcome, yes... I would add:

(1) How these companies are listed (SPAC, or even direct listing) could affect future ability to raise funds. (2) Furthermore, increasing reliance on debt is not really discussed (e.g. a sustainable level). (3) Finally ,the merits of a public listing goes beyond just capital raise (e.g. disclosure of energy source), so it's probably too early to tell if it is better or worse to rely on public markets for the long-term sustainability of the Bitcoin mining industry.

Cheers :)