Airlines comply with safety regulations. The exploitation of employees is outlawed. There is no reason why credit card companies shouldn't be aggressively regulated by the federal government. Today, rates vary widely due to state laws governing rates. No credit card company charges what state law permits.
Banking is a noble profession.
Without bankers government couldn't issue bonds that construct roads, schools, or highways. Banks provide loans to buy cars, homes, and pay for college tuition. Credit cards are also a convenience in modern society. Lending has a dark side. Currently, rates are loosely regulated at the state level.