Anger and jealousy toward the "1%" is a dangerous road for a country to go down. Besides, without investment banks and private equity firms, an essential part of the economy -- namely, buying and selling companies -- would be missing and we would be worse off.
The place where you should direct your ire is toward corrupt government policymakers who allow corporate interests to override the basis of our civil society, which is equal protection under the law. Corporations do not want free markets; they want government-sponsored monopolies. We the people should hold our government responsible for succumbing to corporate special interests instead of blaming the companies once they are granted such privilege.