Will our own or a local AI model help us to control our data better?

Yes, if the data must not leave the company. We can deploy an open-source model on your server or in a private cloud and fine-tune it on your documents. The data then stays with you and what you mainly have to deal with is access rights and backups. For most companies, though, it is quicker to start with a cloud service with the rules set up, and to move to local operation only when there is a measurable reason.