Aberdeen is a city past the top of the bell-curve. There is far less social and cultural capital in it than there was in it 10 years ago, it is suffering from the same suburbanisation that kills inner cities hence taking the money out of them, ergo there is no desire for A&R's to take a trip seeking musical wanderlust up here when it is geographically isolated. Most big PR attempts to address this are a sleight of hand (not music, but the highly-rated SPECTRA light festival is bought in from other cities, a perfect example of how money you could use to breed culture gets outsourced, completely defeating the point IMO)
More specifically: venues are scattergun, scenes have been micro-compacted and barely intertwine anymore, and the lack of a central point of reference like this site used to be for your key age groups (15-25) has been killed off by social media. There are still plenty of bands about, but the chances of the stars aligning for them going big (ie. Chvrches) are far less - the gap between the settled bands and the ones who want to go places is bigger than it has ever been.
How to solve it? Employ me as a development worker-type on decent money and I'll tell you