The answer to this is probably on the joomla site but I can't find it.
The business model for my company is Software as a Service (SaaS). I am using joomla.
If I write an extension for joomla am I legally required to publish it?
Obviously joomla is very much an open source philosophy, but I find it hard to believe anyone would have a use for any extension written by myself. There is also the issue of loss of revenue if I open up my software (which is basically an expert system) to be copied to a third party's site.