Then close? !!!
I think the MANNER in which people shop has changed substantially.
There are many 'routine items' which are always needed at irregular intervals - eg buffers, wheesl, tyres, screws - and more major items which could be 'set in stone, only every 3 months not greater than £x', for example.
Many of 'our works' suppliers will have ACCESS to items listed as 'in stock, small delays' but they've guaranteed availability from THEIR suppliers, and will not be invoiced unless 'picked' / ordered.
I think it's NICE to have a physical presence - shop - and somewhere where people may wander regularly - not necessarily shopping precincts, but where they can have parking, etc. - ideal world - but the majority of sales will be internet sales.
Get 3D printing going better, with 7,000% better quality for 0.001% of the current price, and it may simply be a case of purchase the program and enter the digits - out comes the 275th rendering of 'Flying Scotsman' ...
We all have our own 3D printer and off you go!!