The US is a mature market and not an expanding market. Are you saying the rate of growth is too low? Yet Brexiteers are trumpeting a USA FTA as a potential benefit.
Look at the number of FTA the EU has signed recently - there is negotiation power in a collective agreement.
Not sure what point you are trying to make re "trading information". Are you saying that FTA are not important as services transcend physical barriers? Or location is not important? Can you clarify.
Im not saying EU membership doesnt offer a lot of trade, it does. However there are other factors that need to be considered. The cost of membership, for 1.
The EU is a mature market. The biggest growth in both goods and services will be India, China, Brazil.
The digital age means less importance is placed on location than before. That is even true of goods since so much can be done remotely now.