The decision affects private entities that accept some form of federal financial assistance (this is language from Title VI of the 1964 Civil Rights Act), not private entities writ large. Granted, that is still a big bucket.
> “many of the thought processes and the basic legal principles” are the same, says Daniel Pyne III, an employment specialist at law firm Hopkins & Carley. If the court strikes down race-conscious admissions in education, “that is a strong hint that the same decision might be made” in employment cases
https://www.bloomberg.com/news/newsletters/2023-06-22/suprem...