The most useful parts of IntelliJ require a license at $200-500 a pop. Furthermore, the open source part of IntelliJ wasn't created by a charity, and wasn't released with charity in mind.
The point isn't about charity or not paying for software, it's about not having unnecessary copyright restrictions. So the fact that it "wasn't released with charity in mind" does not matter--it's a good thing, in fact! The point isn't to have all programs released by "charities" but just to limit copyright.
I don't think you get it. IntelliJ can afford to release open source software to acquire enterprise customers later on because those customers pay. If IntelliJ saw the same attrition rate at BigCorps as musicians saw with their albums, they wouldn't have a business. So we're lucky to have deep pockets paying for software for us... you can't really have that with a lot of other industries, or even with a lot of categories of software. Where's the World of Warcraft Open Source Edition?
