Disabling the tpm requirement is just a registry hack in win 10, or a selectable option when creating an install usb with rufus.

I think they will make a simple calculation; What is going to cost more: The bad PR of nolonger updating 240 million pc’s, or accepting that a small portion of your users does not have tpm?

They haven’t stopped advanced users from installing win11 on older hardware so far. So no loss there. I also doubt they lose enterprise money if they allow win10 to upgrade regardless, as tpm is now well entrenched as the default on new hardware.