They transferred a huge amount of cash (which by itself loses 10% per year due to inflation) into an asset that makes money. Even if Activision Blizzard made zero profits from this day on, it would have been a better investment than holding onto $70 billion cash that will be half as valuable in five years. So I don't think they need to waste any thoughts on how to "recoup" the money.
Excellent point.
The acquisition itself would provide them many benefits by improving their revenue and profits, adding way more value due to prestigious teams, brands and games, it would secure a lot of content for Xbox and GP and these IPs could be milked in many addititonal areas like movies, tv shows, comics, toys, books and so on. Plus also in terms of PR & marketing they'd get big names to fill roadmaps of releases and events. The acquisition provides them many positive things directly and indirectly.
But other than them I didn't realize the one you mention: nowadays this money is better in something that makes money that sitting in the bank. Because inflation, but also because there's a huge upcoming finantial crysis and at the same time USA is losing its worldwide finantial hegemony, the economy is moving to a multipolar world. This means the dollar value will go down, so the cash in the bank will loose value, so it's better to invest it in safe stuff.
And inside gaming, being a platform holder the best investment they can do (other than to buy the market leader platform holders, which I assume aren't for sale) is to buy the biggest 3rd party publisher.
Epic and Valve are private companies, not public ones. Its not possible for anyone to buy them. Its not difficult, its impossible. Because i doubt Tim or Gabe will wake up one morning and say today im just gonna sell my company for no reason
It's possible to buy private companies like Epic or Valve. Like in public companies if the stock holder wants to sell and other people wants to buy and thinks its price is ok, can be bought.
This kind of companies have other companies interested to buy them and with enough money ready to buy them. In the case of ABK, Bungie and so on their sttockholders wanted to sell. Tim or Gaben as of now don't want to sell.
If companies like Epic or Valve aren't sold isn't because they are private. It's because they owners don't want to sell. But who knows, it may change.
Maybe some year Gabe (60 years old) or Tim (52 y.o.) may want to quit from gaming and retire, and to earn even more money for their retirement and their family. Or may decide that their growth is somewhat stuck and someone of the ones who want to buy them would help them grow in certain areas where they want to grow but they can't do it by themselves (because they have access to more money, because they are gate keepers of some market they need, because they are the best partners to enter or grow in certain market, because they have some tech or data that they don't have acess to and wouldn't be able to develop it in many years, because would provide them some content they need/would welcome for their platform, etc).