The only part where MS comes into the picture is the "Microsoft Windows" sticker on the bottom of the laptop, since HP shipped windows pre-installed.
We shouldn’t be forced to spend money at any company. Where are the Free (beer and Libre) methods??
I think there was also an implementation for mac os based on the t1/t2 chip, but since I've never had such a mac, I've never looked properly into that. But that probably means that you could roll your own.
A quick google search yields this for Linux with a TPM: https://github.com/psanford/tpm-fido
But ultimately you need to get some hardware _somehow_ which costs money, though some conferences give out free Yubikeys (or equivalent) and most enterprises would provide them to users directly.