Economic arguments polarise into Right vs Left arguments. How about recognition that our democracy allows change and adapting to the environment is what we need to do more of. What are we, the British public, doing to export more?
Businesses need to take note that tax-haven economies are inherently unstable and can go belly-up. Governments at least provide ballast. Ultimately we will do better because the EU will cause economic growth. If we build infrastructure it will be there to grow into, if we do not, growth is no longer possible.
(published as a comment in The Telegraph here)