Forget tax breaks, there shouldn't be any tax on work and on production at all. You tax something, you get less of it. Inflation is a tax on work. Business regulations are tax on work. Income, payroll, dividend, capital gains and other wealth taxes are taxes on work. None of them should exist, the government structured around taxing work will destroy the economy as has happened time and again, not just over decades, but over the entire existence of human life on this planet.
The rich stay rich by letting their money work for them. As to the USA economy right now it has nothing to do with production at all, it is all inflation based and it is mostly fake, it doesn't exist. USA is an unproductive economy, that cannot pay for the imports that it consumes with its own export of productive output, instead it exports inflation (money printing) and war. Disparity between the rich and the poor exists and will exist always and in the times of Rockefeller it was much more pronounced than anything we can see today.
Compared to Rockefeller the wealthy of today are paupers. By the time he died he was worth over 600,000,000,000 dollars in modern money, nobody is worth that much today at all and yet the economy was growing, the unemployment was minimal and the productive output was staggering, allowing the USA to become the economic powerhouse of the world over the 19th century after being an afterthought to Europe for centuries.
'Trickle down economics' is economics of savings and reinvestment and not of consumption at all, so yes, all of those people who use it are economic illiterates, they think in terms of spending money on the consumables instead of spending money on investment to grow money, which is what grows the economy *in normal free market economy*, which is what is happening in China today, not in the USA. You think there is no income disparity in China? Ha! Yet that economy is hot and growing and will keep growing, this century is Chinese and that is that and not American at all, this century is the century of free markets disguised as 'communism' and this is also the century of central planning failure disguised as 'American capitalism'.
Minimum wage does not protect the most vulnerable, it hurts the most vulnerable, minimum wage is minimum ability, it will displace the most vulnerable from the work force entirely.