Operating income equals earnings before interest and taxes and non-operating income and expense. Non-operating items and interest income are probably irrelevant here. Interest expense may be relevant if the Cs have debt, but taxes are undoubtedly relevant. Sports franchises are pass-through organizations, and their income is taxed at the ownership level. The maximum marginal tax rate would likely be just under 30% for these owners.
Long story short, Forbes estimates that the Cs' operating income for 2020 was $86 million. After-tax, that would be between $60-61 million in net profit if there's no debt or non-operating items, not the numbers being posted here. No one knows how Forbes comes up with their estimates of operating income or their valuations, but suffice to say, the owners really make their money when they sell the franchise. It's a long-term investment.
Also, the GSW are the exceptions to the rule as far as going deep into the tax without being a contender because they were opening a new arena and needed to sell the prospect of being a contender to sell out long-term, high-end packages to all the corporations in the Bay Area and Silicon Valley.
Lastly, IMO, the Cs are not in cap hell, nor is their situation hopeless, but that is a post for another day.