[supertrope]

Electronics is an extremely cost conscious industry. There's not a viable market for massive jumps forward if the laptop would cost 10x. Approaching the Shannon Limit also is at odds with maximizing battery life. Recent Macbooks only have 2x2 MIMO. Presumably 3x3 MIMO used relatively too much power, space, or BOM.

[fulafel]

IR is 0.3-100 THz, so the bands can be very wide and don't need to approach theoretical bandwidth efficiency limits to get lots of bits over, no?

[hilbert42]

Right.

[hilbert42]

Fine but this is an optical standard, and if worried about power then automatic and or fixed limit throttling could remedy the problem.

The link sp332 has provided says it all, reckon it supports my case.