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Yes, it mattered to the competing marginal groups. I tried to stay away from defence contracts as an example because that's government spending and has to come from tax revenue, it will continue to be important where in England and Wales defence contracts land because the local population can live on that.
I'm more interested in open/worldwide competition for trade or business which generates tax income, i.e. the production of goods for export through manufacturing. Surely competition between an iScotland and rUK would increase vs the current situation.
Yes, but it DID matter. Where large defence contracts and the like have gone has always been intensely political and calculated to avoid pissing off marginal constituencies.