[somethoughts]

I think the analogy would be more equivalent to AWS. There are different costs associated with using the various SDKs (i.e. Lightsail, EC2, S3, SageMaker).

I'd also say the more it can be defined in terms of technical reasons the better.

There are R&D costs to maintaining a cutting edge, industry leading 3D Graphics SDK for iOS that the primary users beneficiaries of said library (i.e. Epic, Xbox) should contribute to.

This would require a bit of mindshift and context.