Markintime:
Businesses fail through a lack of customers or the ability to sell sufficient product at a profit to cover costs. If you take 6 million out of the country then local suppliers will lose enormous amounts of business and the treasury will miss huge amounts of revenue.
Yes, but you'd be losing businesses as well as customers, and the treasury would have a smaller population to spend on. There wouldn't necessarily be a drastic imbalance there. About a million UK born people have left the country since Labour came to power. It's not that that collapsed our economy.
People in work pay for those who aren't working or can't work. If you lose business infrastructure then you put people out of work. They in turn need financial support and have less money to spend. A million people may have left this country but there is probably a similar number who have either moved here or moved back here and yes, I agree it isn't that that caused our economic collapse.
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Business in Aldershot was decimated by the departure of the Army with shops and pubs closing down wholesale. People who had been employed by the Army in a local capacity were suddenly out of work in a town were there was precious little work in the first place.
Yes, but you aren't looking at opportunity cost. This is Keynsian thinking.
The money not being spent by the Army in Aldershot was spent somewhere else.
Yes it was spent elsewhere but under your proposal the money would not be spent in the UK so our economy would see no benefit from it.
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The more people you have in a community the more financially buoyant it is.
If that was true then China would've been wealthier per capita than Hong Kong or Taiwan. Think about it.
China is Communist so that argument hardly holds merit.
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Better still look at what happened in Uganda and how it's whole infrastructure was destroyed by expelling most of the professionals from the country, fortunately, Uganda's loss was our gain.
Yes, the loss of skilled people is the problem I pointed out. It's not really much to do with aggregate demand.