Yes, it is something but I am not sure that this is enough.

There are accounts that contain important information and I could not see how the owners of these accounts would change the license.

There are users that

Giving pro membership is the option I am going to use but this is not perfect either because the amount must be paid upfront and is relatively large - $50.

I could support up to 10 accounts with the monthly subscription but I could not pay $500.

The pro membership only lasts for a year and then we are back in the same place.