I agree with your point about it being a principle, although I would add that the decision to build a product in this manner is also a principle.
Furthermore, I would sort of disagree with the answer to why people would buy this. In terms of "most people buying a computer", the overwhelming majority of Apple customers are likely ignorant to this issue, and will continue to be.
Furthermore, I would sort of disagree with the answer to why people would buy this. In terms of "most people buying a computer", the overwhelming majority of Apple customers are likely ignorant to this issue, and will continue to be.