Wall Street bailouts, letting corporations exfiltrate revenue to off shore tax havens, defunding the IRS, oddly specific tax loopholes, tax cuts on the wealthy, letting lobbyists write the laws. That's just from thinking about it for ten seconds.
It's known as "the Fed put". Whenever rich people have taken on too much risk the fed has been printing money to keep asset prices high so no one gets hurt. Im sure you know that the Fed is even directly buying corporate bonds now. This is paid for by main street through the inflation tax.