How many of those $10B companies are actually really worth that, not just an inflated result of funding rounds? The parent is talking about S&P 500 com

How many of those $10B companies are actually really worth that, not just an inflated result of funding rounds? The parent is talking about S&P 500 companies, which means publicly traded ones. The thing where private companies have inflated valuations [1][2] doesn't apply here. [1] https://www.benkuhn.net/terms https://www.benkuhn.net/terms [2] https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2955455 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2955455