We are yet to see. None in the article proves any point.
As for Singapore in Thames if you are familiar with the concept I don’t see how being within or outside EU is any meaningful impact.
Although I don’t see how a basket case UK is any competitor to EU. UK has nothing to trade with anyway and once their exports are subject to EU tariffs it is only to get worse.
Britain has nothing to trade with? We are the fifth largest economy in the world. You don’t get to that position from having nothing to trade with.