I suppose mainly it's about money and power. It's rare for someone really wealthy to suffer serious consequences. Before Epstein went to prison, he got a ridiculous deal from the guy who was later Trump's Sec of Labor, Acosta, where he had to report to prison each night but was out for 12 hours a day or something... since, you know, his work is so important because he was wealthy.

I'm not sure about individuals, but a company can be sanctioned in various ways for ignoring a subpoena... usually something like being prohibited to operate in a state, or being dissolved. Fairly unlikely that would happen to a company the size of facebook. I guess I'm not sure whether a subpoena like the one in the article is addressed to a corporation in general, a department of the company, or an individual?