The crash would come from being unable to fulfill financial engagements when total real income + funding fails to keep up with spending, and does it enough that the valuation mirage starts to fade.

What that reveals is the loaded cost of inference being more expensive than they've been showing, not cheaper. The crash would be the end of subsidized costs to users, not the revelation that it's a high-margin operation.

Selling compute/inference at more of a loss will probably not fly in the context of bankruptcy manoeuvers. They will need to shed spending engagements instead. I imagine Mistral would rather buy out some of their Nvidia purchase agreements for a discount if they want to build additional capacity at that time. I also don't think they'd be interested in US datacenters at all. If they want them they can get that in Canada, with a better ally and less political + financial risks, which is kind of the Mistral segment already.