A couple of things.
If better optimized modeling reduces modeling cost by 40 to 50x, then that makes at least that particular modeling able to scale much faster. It probably also reduces the competitive power of Cuda.
If what happens next is a dot Com style crash in Ai data center build out, as it shifts away from Blackwell or just puts projects on pause for a while, the Ai providers, which did OK today, will have improved profitability and customer growth due to the lowered costs.
Hard to see that this anything but positive for adoption, and that growth will be good for more than just nvda.
It really does seem like a tech shift similar to smartphones taking compute away from pcs, combined with a potential for severe price discovery in the first movers, mag7 and the like.
If it revolves into a crash then Intel gets hit along with the rest of tech, but that may not affect the broader economy.
Coming out of that, the service providers such as pltr, crm or snow, should big winners.
Oh, and have little doubt that ccp will sneak in backdoors. They may have even come up with this as a way to take down the mag7.