Can you show some evidence that's less than two decades old though? ;)
Open source has "won" in the meantime. Why would Microsoft be interested in turning back the clock now that the money is in services, no longer in software.
Open source has gone horribly right, but Free Software isn't anywhere close. The year of the linux desktop is literally a punchline, and Replicant shows that it's not possible to have a fully libre smartphone.
I guess the general attitude of FAANG and microsoft towards open source is that if they could make money with it, it's good. Once, companies saw you could make money with opensource, other concerns evaporated. This reminds me of all those ads that IBM spent promoting linux, but, ultimately didn't end up as winner with opensource.
