Missing the point big time.
No changes in tax when buying new - so yes, we will continue to buy new goods from the EU and EU manufacturers will want to continue to export to their most important export market, the UK. It would be seriously daft to think otherwise - can you imagine BMW or even Thomann saying "screw that we have a 10 minute customs form to fill in?".
The key change is when buying used goods from private sellers - we now have UK VAT when we import these just as we do with new goods and just as we have always had with used goods from the rest of the world (USA, Jersey, Japan, India, China etc)
However, there may be a work around for the used goods issue too - we're just looking into that on the thread Bunion linked into above.