Businesses are not human: agreed. Businesses are a legal mechanism to execute on behalf of its owners, while shielding them from liabilities, tax included. This is enshrined in supreme court cases involving Hobby Lobby, Citizens United, etc: corporations enjoy a freedom of speech because otherwise the freedom of the corporations' controllers would be infringed. They have more rights than you and I, and in many regards, less responsibility. The corporations may not be selfish, but their controllers are selfish human beings.
Private jets are a great example. If you buy one, that's expensive! If you start a corporation, the corporation buys a jet, and you make a symbolic effort to rent it out to a friend once and a while, you can write down all of the expense as a loss. Those get deducted from capital gains made in other ventures. Voilá, instead of paying tax, your money goes to luxury expenses instead! And if you're not going to tax the actual profit-making companies, then you get zero taxes from the people extracting the most rent from society.
Free market capitalism has been infected with a mind virus that rents are awesome for society and regulation, liability, and tax are a detriment. You're entirely turned around.