Contract Language & Terms When Providing Courses to Run in Company LMS

Hi Heroes! What is the most common practice for retaining control of your content when your client wants to run it in their corporate LMS. For example, if I license courses to them for one year, do I just have to take their word that they'll deactivate them when the contract runs out? Or is there some other, better way to retain control of my course content and still allow them to access it via their LMS? Maybe some sort of 3rd party solution, etc?

Do you use any specific language for this scenario? Or how do you handle this type of situation?

Thanks for your consideration!
Levi