"Nvidia would have to convince a hyperscaler to buy Nvidia GPUs for a Nvidia+Photnic Fabric system. It could be that lower end (fewer flops), less expensive AMD GPUs will  be  given a preferrence."

Lazovsky definitely has an efficiency plan:

"Since the cost per gigabyte of memory capacity is going through the roof, Photonic Fabric looks at the other side of the coin and offers light, photonics and optical connectors across AI acceleration systems for growing workloads."

“By eliminating the use of GPU as the world’s most expensive memory controller, if you don’t need the flops and you’re just buying GPUs for memory capacity, there’s a more efficient way to do it.”