How were the economic ideologies of the United States and the Soviet Union different?

The government in the United States controlled industry and business through
taxation, while in the Soviet system private ownership was the key.

The economic system in the United States was based on collectivism, while the
Soviet system was based on the individual.

The economic system of the United States was based on free enterprise, while
the Soviet system was based on a command economy.

The United States system was based on the economic philosophy of Karl Marx,
while the Soviet system was based on John Maynard Keynes's ideas.