To be fair, they are talking about the OpenAI end user version, not the models themselves.
Its still sketchy to send your data willingly to them and hope because you pay per request, its not getting tracked and saved.
My company is deep into microsoft, so we all get Bing Chat Enterprise.
Microsoft says it doesnt store anything and runs on separate systems.. i guess with a company-offer they are more likely to put more protections in place because a breach would mean real consequences.
(opposed to a breach with end-users, most of which dont care or would ever go through the legal trouble)