I really do dislike that AMD and Intel have left us starved at 2 memory channels. It is becoming a very noticeable bottleneck, but they have to protect their 4+ channel workstation market. Because any of the i9 or Ryzen 9 CPU’s with 4 memory channels would cut their workstation sales in half.On newegg best selling cpu first page, none of the AMD has more than 8 cores, despite some being quite expensive (like the 7800x3d) and I suspect a lot of higher than 13900k sales are more because of the bigger cache, better bin than wanting 8 more E-core, not many people would sacrifice the first 12 core being any slower to have more of them in that price range-segment, 16 cores model appear on page 3.
They would know the demand, I would imagine that for 24 core cpu to be worth it, in many case you would want more than 2 memory channel to not starve those extra core and you go into threadripper pro-epyc segmentation territory issues even more than the high core count started to do.
Starving core of memory bandwith is such an issues that they add CXL memory to system with 12 channels