Comment by michaelmrose

You seem to believe this specific example where you are literally making up the non public profit margin proves that for the entire class of consumer laptops making non serviceable parts greatly decreases the cost. First it was an hyperbolic 10x and now it decreases costs by half. All examples are not only fictional misuse of both real and hypothetical numbers they say nothing much about the entire class of things.

The M1 is a fresh design on a new iteration of an arch by very smart people and its likely that there are far more factors at play than presence or absence of sockets in terms of determining profitability.

What we are trying to do is determine all things being equal how much cheaper can the same machine be with and without replaceable parts. I don't have any numbers either but I strong doubt its 2-10x cheaper.