Its possible to enjoy a decent standard of living on £500 a month ,which is a typical doctors salary in say Bangladesh , but in the UK a basic factory manufacturing job for 40 hours even at minimum wage is about £1300+ so manufacturing other than ultra high end performance products is simply not economically viable.
You are right though, every "city" job lost could be 10 or more support/service jobs lost.
..... and the role of coquettish ingenue doesn't suit you. Darije Kalezic July 2020