[Zope] Protecting Zope solution / application -> deploying solutions to customers

Is there a way to protect your intellectual property, if you deliver Zope solutions to customers who have Zope instance running or you will also deploy Zope there. I'm talking about solutions that cosist mostly of some Python based products, Python scripts and page templates -> ie. typical web based site that has some logic, functionality and content, which is accessible through the TTW interface. And even though the client would not have admin account to the Zope instance, they could write a new superuser with zpasswd.py and then get access to everything. My question now is, is there a way to protect your work from being copied, altered or even read in source format? -huima