Because the free market is very slow, and it's a greater total harm.
Would you rather your child learned which items are hot by scarring themselves each time?
Would you rather your child learned which items are hot by scarring themselves each time?
Free markets also include the spread of information and signaling. People can learn from the mistakes from others. It is precisely in a free market where the information gets to be spread out the quickest.
Some types of signaling are best to be learned before it becomes a problem. Like killing.