Hosting by Mistral/OpenAI/Startup is often a non-starter for the larger enterprise style customers.

For example, they have a legal agreement with Azure/GCP/AWS already and if they can say it's "just another Cloud provider service" it's stupid how much easier that makes things. Plus, you get stuff like FEDRAMP Moderate just for having your request sent to Azure/GCP/AWS instead? Enormous value.

Getting any service, but especially a startup and one that ingests arbitrary information, to be FEDRAMP certified is the bureaucratic equivalent of inhaling a candy bar.