Or maybe they will launch Win 12 with optional TPM support.
Imho making the OS(es) TPM only cannot be good for their business, many people are still on Win 10 with no intention to switch, since their motheboard does not support TPM and do not want to upgrade PC / waste PCI-E slot on TPM extension.
Microsoft doesn’t care about you upgrading your personal computer. they care about business licenses. Enterprise pays the bills, and enterprise computers have all had TPM for ages. I don’t see any reason for them to make a change. consumers buying a new os for an existing computer is a drop in the bucket