My point is that in case British businesses have to overcome barriers (e.g. tariffs), their best bet at not going bankrupt is selling non-physical goods and services with as much added value as possible. That implies high technology and investment in research.
Non-physical so selling to America, Africa or Asia is as cheap as selling to Europe and added value to absorb the new cost of doing businesses (in case the UK does not remain in the Single Market).
If e22 encryption is outlawed in the UK, their businesses would be less trusted (harder to sell expensive things) and will be at the mercy of other countries' intelligence and espionage services.
