Imagine if someone makes an "experimental and innovative" nuclear reactor that explodes and gives radiation sickness + cancer to hundreds of thousands. Or someone makes an "experimental and innovative" dam that collapses and floods houses. Invisible hand of the market won't be able to undo the damage or prevent it in the future from repeating again.
Those examples you give are too exaggerated to the point of being unrealistic. For me, the amount of regulations should be reduced to the minimum possible, as well as taxes, but for example for the nuclear or the petrochemical industry, of course there must be regulations. Besides, today we are not exactly lacking in regulations. There are thousands and thousands of pages regulating ad nauseam for even if you want to open a fucking souvenir store. Besides, if the creator of the submarine violated the regulations, he committed a crime to begin with.