I'm new to WordPress and I'm discovering that there are a large number of plug-ins I would have to pay for, if I want to receive/use them and that I am tightly constrained in how I can use them.
Having used another open-source CMS I am aware there have been issues with charging for themes and open-source. Indeed, I purchased a theme for that CMS last year and the provider made clear that the php code was open source under GPL, but that css and other files were not. This I understood.
In searching for information on the internet, I came across this http://news.softpedia.com/news/WordPress-Law-Adopt-GPL-or-Face-Legal-Action-148811.shtml which seems a similar issue. However, I could find nothing on any similar stance being taken against paid-plugin sellers.
Does his mean that these plug-ins are exempt from the WordPress licensing model. If so how and why, given themes seem not to be.