Indeed, though I still think Brexit was a stupendous piece of national self-harm, a "cry for help" aimed at a group of sociopaths, I agree.
If anything Brexit is more likely to bring about the return of brick and mortar shops and higher prices, because dealing with import documentation, tariffs and so on, will be beyond the wit of the small traders that currently sell on ebay and Amazon.
However, before that happens there is going to be a lot of economic pain.
One reason is that non-jobs have flourished as productivity in real jobs has increased. Governments know that having a lot of unemployed sitting around eventually leads to riot and revolution, so it makes sense to have double glazing salespersons, fingernail decorators, telephone insurance upsellers and an advertising industry dedicated to making people think they want things they could easily live without. Coronavirus is going to stop a lot of that. The retired on pensions generally spend their money on food and service industries, and occupy their time in harmless pursuits, but a couple of million unemployed debt ridden graduates could have dire effects if they get their act together. The Brit riot in Benidorm because the bars were closed could be the tip of a very big fatberg.