My opinion is unchanged, further scaling can be possible only through
market mechanisms. Actually, in the light of block space requirements brought by quantum threat, these mechanisms would merely preserve the status quo.
The main problem with new computers is they all have backdoors, at the hardware level. With Intel you hve the "Intel Management Engine" (IME), and with AMD you have the "Platform Security Processor". IME is more understood, with PSP we don't even know anything about it. Both have proprietary blobs and cannot be flashed in current computers. So While the 3900x is awesome in it's performance, you have the privacy problem. This forces people to use old computers to run nodes.
Thanks, this kind of information isn't plastered everywhere for obvious reasons and I have had to dig again into the latest achievements of the big brother.