And Apple already charges for those through their $100 annual developer program fee. They can't just make up arguments about how that's not really for developer tools because it happens to suit their agenda.
Quote from their own website:
> By enrolling in the Apple Developer Program, individuals and organizations receive everything they need to develop apps for distribution.
Apple won't be the one distributing them, alternative app stores are, that's the point.
Besides, Apple never claimed their new fee was for distribution, but for "core platform services", i.e. the SDK and tools, which they're already charging for.