You're feeding into more of that fearmongering Mat is talking about, which is what I was pointing to as well.
Phil, himself, has said he doesn't see a future where game pass is 50% or more of Xbox's total revenue, i-e the whole dominant idea is sort of a forum-creation than anything they realistically expect, it is doing what he intended to at the moment, and is profitable to them as it stands.
For me, and many others, it is an incredibly valuable service. I reckon the same is true for many PS+ subscribers as well, but no one expects it to become the dominant gaming medium any time soon.