Outside of the startup world, "making money" generally is understood to mean PROFITS not "revenue".

Sure, so do you or the GP have any profit numbers or even analysis to back up the claim "they're years from making any money on the Surface line" ?

We have the history of the XBox, which took ten years to make any money, and is likely still in the red. Currently, the Surface lines volumes are too small to give MSFT the economies of scale to make gem profitable.