Big tech names like Microsoft, Google and Amazon have poured billions into the biggest names in the AI startup world, effectively replacing what used to be the role of high-profile, highly capitalized tech investors like Tiger Global and Softbank. And in some cases, through exclusive cloud contracts, those investments in startups come right back in the form of cloud revenue. This week on TechCheck, we dig into the megacaps' mega deals, and how big tech could be using AI investments to bankroll themselves.