The implication is that some other method of allocation might be appropriate or fair or forced upon us. The further implication is that that might be a share by "population".
The reason this remains implication and is never spelled out is that it would be so ridiculous a suggestion. The notion of a "population share" arises only as a budgeting tool in the context of the existing UK where it shows, say, what contribution is made to the UK's economy, on a GDP per person basis, by North Sea receipts. No-one has (to my knowledge) ever seriously asserted that the physical entity "Scotland" should be divided up on a population basis. If it were, the border would be around Inverness, I believe. The proposition would be simply preposterously ridiculous.
And yet. It keeps cropping up: "assuming". Sort of like "taking for granted without thinking about it". OK. Game on. Let's think about it.



