...the contract says the material submitted to them won't be used to train other models - and he believes it...

This is what I just don't get, that people trust major companies when they claim to not analyze or use your data in any way they can once you have uploaded it to them.

It is a simple equation, how much does the actual breach of contract cost, how likely is it that we get sued and loose, and how much better will our models get by analyzing and training on everything?

Unless you can honestly say that a huge corporation like Microsoft/Google/Amazon would pay more to you and every other customer for missusing your data than they will earn by improving their models on all their customer's data, you can't use proprietary data in an LLM/AI.

I miss the old network shares, now it is all OneDrive and SharePoint, it sucks.