Licensing a GS Theme/Plugin - How to Implement This?

[shovenose]

See, my problem is that even if I ecyrpt the plugin and force that to be licensed, and I could make it block the website from loading if the license is invalid, they could simply remove references to the plugin from the theme, and then remove the plugin, then just share the template.
I can't prevent them from removing the licending plugin code from the actual php/html templates in GetSimple, without encrypting it. But what's the point of a website template if you can't edit it??