Inference was already cheapish - businesses already
can run gpt-like models by themselves. NVIDIA sales are not driven by inference spending, but training spend.
While sure, maybe now people spend more on inference, NVIDIA was not an investment based money on selling GPUs for inference, because it requires so much fewer resources.
Also, inference is easier to get disrupted in just because of how it works.
All told, this makes it a much less likely play.
Finally, the assumption that it goes up assumes people want on-prem infrastructure for this (in your case). Maybe true, maybe not.
Overall, going from being a "sure" thing selling 200m worth of clusters to random companies hand over fist to not necessarily being able to do that is definitely "bad'.
There are other common claims about why it will increase demand, and they rely on different assumptions (that you won't hit a good enough point quickly, etc)