The U.S. has been outsourcing industrial work and deregulating the financial industry for 30 years. During the 1950s, the financial industry was less than 10% of Gross Domestic Product. Now it is well over 50% and most of that is the slippery, tricky 'gambling' stuff, not retail banking.
The good paying jobs of the 50s and 60s are overseas now, and the financial industry doesn't provide many good jobs. So right now our economy is kind of falling apart for ordinary people even though Wall Street does fine.
It's going to get worse before it gets better because nobody is doing anything about it, not really. Our government has also gotten unbelievably corrupt. Wall Street basically owns our government. What we want scarcely matters at this point.