Having a 'fair wind' behind you implies that other people have the money to spend on your product or service. If you have eg. 30,000 unemployed steelworkers in your town and 30,000 vacancies in the IT branch you cannot match the one up with the other and end up with structural unemployment. You could of course start up your own business (if you have the capital) but if your immediate location is full of the same 30,000 unemployed steelworkers then it's not going to get very far. Which means the 'flexibility' to relocate - but then your house in Liverpool only buys a third of the same house in the affluent home counties - besides which nobody understands your lingo down there ! You could of course re train in something else - but the problem there is that you have to have re training programmes in existence in the first place and you have to be certain that the job you are retraining in will not also be killed in 5-10 years. How many jobs can you safely say will still exist in 20 years time apart from in caring for the old ?
The UK currently has the lowest unemployment for 45 years, this is including the million that came to the UK from the EU because their own countries were unable to create any employment. There may well be unemployment in future because of automation, just no sign of it yet.

