My guess is that big companies are dipping into crypto to escape from tax issues? I'm not sure about how it works in other countries but in my country, you don't pay tax YET when you buy crypto!
When they cash it out, I am sure that they are still going to get taxed for it. You can't just escape the tax bureau knowing that taxes is the lifeblood of the government and they will not be defeated easily in terms of tax evasion.