Re 800G: Suresh recently talked about how that market is being served today. He called the 800G pluggables available today a work of art.

I have to correct the wording above from a previous post. Suresh called the  existing 800G transceivers that are sampling today  "engineering feats of marvel" not "works of art". They are complex and can't be scaled or produced at high volume. There is not enough integration and as a result there is simply not enough space. The distance the electrons have to travel increases the power demand and creates heat and noise.