An open weight model is literally the only answer. Unless you're ALSO a tech giant, you are a bug to these companies. Every one of these companies will splatter you on their windshield, and destroy your business without even blinking. If the model is open-weight, anyone with GPUs can be your provider.
Google. They have experience operating at scale, and AI is a big enough focus that they won't wind it down. All the big providers are kinda crappy, but if you want reliability, Google is the best option.
Google has experience working for themselves at scale. Your business should never rely on Google more than it is forced to. Even if it's not something they'll wind down, providing acceptable service to anyone is not on their agenda. GCP speaks for itself...
That's the upper limit, but with correlated data like this dupes can come in way sooner. I bet you don't have to ask ten people before you get a repeat with this topic.