Your a wise ruler and your glorious scholars have just discovered Cryptocurrency
Productivity 300%
Income 300%
Wall Street Wonder is Obsolete
Makes Banking Obsolete
All Discontent citizens are are content for 20 turns
and then 5 permanently.
Banking wouldn't be obsolete. On the contrary, Fidor is launching a crypto bank in the upcoming months and banks in digital currencies are likely going to be a requirement for mainstream adoption as mainstreet Joe isn't capable of protecting his private keys from seasoned hackers, user error, fraud and hardware error. People also need credit & financing for entrepreneurial activity.
Income would likely go up as a plurality of currencies would probably emerge and that distribution of wealth is probably going to be better than the present distribution of money in this world.
The Pareto Rule in regards to wealth distribution in wealthy countries is a ridiculous notion as nobody gave you or me an equal share of our countries' wealth and we didn't squander our share away to somebody else.