We have a customer that has built an application on top of WordPress (they are based in the UK) and intends to sell access to this software in two main forms on an international basis.
A monthly licence fee to use the application hosted by them. (Where the user gets access to certain levels of the platform)
An upfront fee for someone to purchase the software and use it as a full internal system within their own business and have access to the full range of software, in this scenario our customer will also be providing the hosting.
The question is how does this tie in with GPLv2? Does our customer still have the obligation (in either scenario) to provide the source code as this would obviously hamper their business model.
There have been no changes to the wordpress core code base (that we are aware of) but the developer has made several bespoke plugins and themes.