I agree the east is growing faster than the west but greater Glasgow has a population of 1.2m whereas Edinburgh has a population of under 0.5m.
As I said Edinburgh appears to have the tourists and the investment but Glasgow has a healthy catchment which is why Emirates have been flying for so long, and is why they are looking to up gauge one of the flights.
This is can all be achieved by putting an extra rotation through Edinburgh which is essentially picking up from where Etihad failed. This will take the cargo the 380 can’t and everyone is a winner. If it’s successful at Edinburgh there could be an additional daily flight but Emirates don’t appear to rush into these things so this could be a few years away.