You seems to be arguing that a U.S. style single-market would be an improvement.
But for whom, people or companies?
But for whom, people or companies?
The EU however is in this weird spot where they are pushing for a more integrated global economy (thanks to all kinds of trade deals) with fewer barriers while at the same time making their own companies less competitive with all these regulations and internal hurdles: There are examples where a German exporter had an easier time sending his stuff to New Zealand than France.