It's the intent, not the method that determines if something is helpful or harmful.
Good grief, no. It's the result, not the intent, that determines is something is helpful or harmful. Bad regulations are always defended on good intentions, because intentions are not a measure of performance.
regulations prohibit engine destroying additives being added to fuel, encourage electrical systems to have devices that prevent electrocution
Consumers and courts can do that just fine without regulation.
lower prices by fostering a single standard that is available for everyone
It's like we've learned nothing from the Communications Act of 1934. It's been almost a hundred years since we made these mistakes. We can do better.