Just as a side note:
License termination is only legal if copyright or pre-buy licenses are broken. If you do it due to EULA or other things, the user is entitled to a refund if you do it unless you are US residental and the user is US as well, please remember that.
Outside US nothing but those 2 things above have any legal influence and any user can take legal steps against you and your company for license infringement and depending on the country for a whole list of other things.
EDIT: Fixed a typo which surely gave some smiling reader faces :)
License termination is only legal if copyright or pre-buy licenses are broken. If you do it due to EULA or other things, the user is entitled to a refund if you do it unless you are US residental and the user is US as well, please remember that.
Outside US nothing but those 2 things above have any legal influence and any user can take legal steps against you and your company for license infringement and depending on the country for a whole list of other things.
EDIT: Fixed a typo which surely gave some smiling reader faces :)