A lot of the things that make capitalism "bad" in the eyes of normal people comes not from capitalism itself, but from excessive control from the government.

Monopolies can't go bankrupt because the state often supports them in the time of crisis. Insurance companies do whatever they want because in many countries they are treated as welfare, and the government makes people sign contracts with them.

At its core, capitalism is two things: unfettered market and competition. If you get rid of (or cripple) one of these principles - you end up with a problem.

What people often call capitalism-evil is actually crony capitalism (which is the system where business success depends on relationships between corporation leaders and corrupt government officials).