How will normal people be affected if you severely restrict the activities of those 100 companies?
Do you want to know how I know you're out of touch?
How were normal people affected by putting in carburetors in cars so they didn't spit out lead into the air?
Edit: My bad I meant catalytic converter not carborators (katalysatorer in Danish)
The point is that the car industry moved on just fine.
2. Carburetors aren't even on the exhaust side of an engine. Most cars don't have them any more (fuel injection), they mix air and fuel before it enters a cyclinder. You must be thinking of a catalytic converter, and that is still incorrect.
3. The only thing that stopped cars from spitting out lead was law and regulation in the US that banned tetraethyl lead additives.