All true, but what I'm saying is that nothing has been "proven". The market has not decided that this is what it wants, Apple has. They have a pure monopoly on the market for Mac-compatible hardware, so whatever they do is immune to the regular market forces which would normally require them to make different product decisions.
So again, whatever Apple manages to sell does not really reflect the reality of the market, since they 100% control that particular market. To say that consumers don't want something because Apple says so, is just wrong. Maybe Apple is right (and this isn't just a decision that's beneficial to their already-obscene margins), but there's no way to know. Hence, it is not "proven" in any meaningful way.
Apple's laptops compete in the same market for laptops that others do. I definitely doubt that Apple's customers prioritize modularity more than Linux or Windows users. Very likely the opposite. Yet, the most popular devices of any OS are moving towards non-modular designs.
So again, whatever Apple manages to sell does not really reflect the reality of the market, since they 100% control that particular market. To say that consumers don't want something because Apple says so, is just wrong. Maybe Apple is right (and this isn't just a decision that's beneficial to their already-obscene margins), but there's no way to know. Hence, it is not "proven" in any meaningful way.