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!
I am not sure yet how they tax crypto in other country specially where these big companies are based. But I don't think such big and popular company can escape tax by investing crypto as they still need to report those asset in their Financial Statements and report the gain/loss in forex(crypto) which will affect their taxable income. I am a bookkeeper but I focus on providing service for Australian company and during that time I am working for an accounting firm based in sydney I worked for some clients (corporation and partnerships) who are engaged in trading and or investing in crypto and they have different tax treatment on them than the regular businesses so I will guess since crypto is now popular worldwide most country except those who ban it has also passed a bill for how crypto traders and investors will be tax.