Because when Democrats build economies they have their focus where it counts, on the citizen and on the small business of that citizen. THAT is why, by the way, the small banks need to be under the authority of the Small Business Administration in regulation and NOT the Fed. What is good for the citizen is good for Wall Street. A strong tax base equates directly into a strong economy with disposable income that facilitates spending that supports Wall Street. Wall Street is NEVER the hub of the American economy with Democrats, it is a by-product and the 'wealth merchants' that buy and pay for Republicans can never get that right. All the wealth merchants of Wall Street want is plenty of money to satisfy their stockholders to earn their bonuses. They NEVER, and I do mean never, have their eye on the ball, so much as their own creature comforts.
When Americans have their way in building a strong and vibrant economy, including strong unions, the economy always has an uptick. GM could never understand that the unions represented a greater number of consumers than any number of stockholders that was being pandered to by any downsizing. Exporting jobs that rob the American tax base, only serves to undermine the economy in a way that is then translated into a national security issue. Wall Street nearly broke the USA this time, it isn't going to happen again.
Consumer protection, strong unions, good labor markets, employment that is sustainable and not generational or momentary, all the national bases covered including good schools and teachers and plenty of opportunity with higher education. There are FUNDAMENTALS that are the pride of the USA, they should never be toyed with and it is all related to supporting and restoring the 'ethics' of a strong Middle Class.
Regulation is all a part of it. Regulation and OPEN MARKETS without protections give strong parameters for Wall Street to operate under. Giving permission for 'playing' with financial tools that are extreme will never support an economy that will support the National Security of the USA and guarantee its people economic viability.