Nested Virtualization is not a new idea. In fact, we announced our first preview of Nested Virtualization running on Windows way back in 2015. From that Windows Insider preview to now, Nested...
Updated Jun 13, 2020
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The same could really be said when it came to a lot of the windows upgrades where they dropped support and those on older hardware just didn't meet the requirements. One of the major differences then vs now (and starting with Windows 7 -> Windows 10) was the upgrades weren't free.
There is nothing that is stopping anyone with unsupported hardware from dowloading the ISO from the Microsoft Installer they let you download and installing that on machines that don't meet the requiements. It won't do an upgrade, but it will install. This is what i did on a 3rd gen 6-core intel that had windows 10 and as long as you registered and activated that copy of windows 10 on your machine you want to install windows 11 on it will activate after you install the ISO.
I have done this to 2 of my machines that didn't meet processor requirements and/or the TPM 2.0 requirements. Works just fine and clean install. You just need to back your stuff up first.
Microsoft said that folks could do this, but you may not get updates or support. However, they release new ISOs that have patches in them for every major release so technically you could always go that route if you need updates and are not getting them. And honstly, windows 10 will be out of support at some point anyways so that is why i did this on my old PCs... would rather get a newer one that runs and has some security enhancements than stick with something that will eventually just be obsolete like Windows Vista and Windows 7.