That's a naive solution. One company could simply litter the city with a competitor's bags. This is why those "WE BUY JUNK CARS" and "WE BUY HOUSES 4 CASH" sig

That's a naive solution. One company could simply litter the city with a competitor's bags. This is why those "WE BUY JUNK CARS" and "WE BUY HOUSES 4 CASH" signs are not punishable based on the owner's phone number. I could just as easily put YOUR number on one of those signs.