Trump is popular, Trump is big precisely because Republican voters are angry at establishment Republicans. And establishment Republicans keep giving these people reason to be mad by continuing to insult them, and by appearing to agree with Democrats on key issues a majority of Americans disagree with, from amnesty to whatever, economics, Obamacare, take your pick.
Without the parallel development of systems of monetary - and credit-based exchange - there could have been no development of economies beyond the most primitive organizational forms and the most geographically restricted sales.