Deregulation can easily and quickly lead to anarchy and chaos. Want an example? The Glass-Steagall act was repealed in 1999. Within 10 years, the US banks and the entire US economy were in chaos, and barely survived. The only reason the criminal banksters and corporate fraudsters survived is cuz they ran to the government for a bailout.
Just goes to show, the banksters and corporations are as evil as the government.
And logically the state went there and helped them, again.
If you deregulate a certain industry you do not help if some of your players go bankrupt, you let them go bankrupt.
Besides, the Dodd-Frank act is so much better in comparison of Glass-Steagall act.
https://mises.org/wire/why-not-replace-dodd-frank-glass-steagall