Why do businesses want to pay nothing to their workers?

If many people in the US were paid based on their skills, motivation and work ethic, they would owe their employer. 

You could be part of the solution. Start a company, risk your own capital, pay your workers a "living wage" .

You go to the store and buy a soda for $1.00.

You have a $10 bill.

Do you say "Never mind.  Keep the change"?

The point of any business is to generate a profit, and labor - just like a soda - is a commodity.  A business will not pay more for labor unless it has to, or it's in the interest of the business to pay above a market rate.  That cuts into profit, which is the lifeblood of a business.

Cheaper they pay their employees means bigger raises and bonuses for them!

They're greedy and trump and his administration encourages it. Trump's hero, besides Vlad Putin, is Gordon "Greed is Good" Gekko. 

Why do workers want a billion dollars an hour? 

That's how capitalism works. Everyone wants as much as they can get so in the end it ends up somewhere in the middle at a fair value. 

The way in which you posed your question indicates you have little or no understanding of basic economics.

ok.... so let's pay based on skills and experience..... go!

they must be republican owned. They have a thing for cheap labor and slavery.