People who purchase templates should have the ability to pull up a cloneable site of the most recent version of that template to apply updates to their site. It’s silly that I’d have to delete all my work to put in a bug fix or new feature added by the template creators.
No other template marketplace works this way. You always have the ability to go back and download updates. If you’re worried we’ll use that template on another domain, then make it so the cloneable template only copies to your purchased template.