Yes, Apple is quite selfish when it comes to open source. They avoid GPL license code because they only want to selectively share their code, which is one of the reason they now avoid GCC and stopped utilising GNU Coreutils in their OSes. It supports developments of some popular opensource apps (like Blender) because it is very popular and not having it on its platform hurts it. And now, by charging developers an annual fee for distribution through App Stores, they also prevent many non-commercial open source applications from being available on the App Store. As Apple also further makes money from any commercial apps through the app store (by extorting a commission from them), it doesn't really want such popular free opensource apps to compete with the commercial apps - every time someone uses one of these free apps, Apple also loses money. Thus, by gatekeeping distribution Apple now effectively cripples the growth of open source applications on its platform. (The only reason a few of it - like VLC, for example - still survives on the App Store is because some kind people donate the money to pay Apple's fees - a waste of money and a shameful act for a trillion dollar company).