The most vibrant and healthy economy is the economy where expendable wealth is spread into as many hands as possible.
A minority of millionaires and billionaires have nothing to do with a vibrant and healthy economy. They are in fact a hindrance to one.
What you are missing is that most of the wealth in question is in the form of the tools of production.
Spreading it out converts money from future development to current consumption. Today's standard of living rises, tomorrow's falls.
What you are missing is that capital is just money. Money to buy capital machinery. Money to buy the tools of production. And that money is not a scarce resource. Money is created by people taking out debt either for consumption or investment and by the government spending more money into the economy than they take out by taxing.
What drives the economy is demand. Demand is generated by wages, money in the hands of consumers. If there is the demand for products, there will be capital for investment. There is no trade off between development and consumption. You have to have consumption to have development.
Putting more money into profits instead of wages reduces the amount of consumption and the amount of development. Increasing the amount of money collected in taxes doesn't increase the amount of money available for investment, it increases the amount of national debt. Debt does create money, but in this case the money created isn't available for either development or consumption, it is in the form of a Treasury bill held by an investor. The money created is locked up in savings.
There is a trade off between profits and wages. The split between profits and wages is determined by the various economic policies of the government. If the government artificially supports profits instead of artificially supporting wages the government suppresses demand and reduces the money circulating in the economy and reduces growth in the economy. This is what has happened over the neoliberal period, under supply side economics. The government decided to artificially boost profits by doing everything that they could to suppress wages.
I have often asked you how much in profits do we need to guarantee we keep the capitalist machinery running? I think that we don't need any more than twice the amount of business investment made in a year. Of course, this is what profits are suppose to fund, the amount of business investment that is made every year and the returns to capital, the historical amount that is returned to the shareholders, a more than reasonable return considering the prevailing interest rates.
Currently, before this bill increasing the profits paid to the shareholders, we have nearly six times the amount of profits to actual investment made by businesses. This doesn't count the profits earned in the US but illegally off shored in tax havens.
I am somewhat surprised, you seem to be defending this tax cut bill. Tell me it isn't so. You seemed to understand the arguments above. This discussion always comes down to the same thing. Keynesians describe how the economy operates and suggest that we use that knowledge to improve the economy for the greatest number of people. Non-Keynesians tell us how they wished that the economy works and how to make the rich even richer.