Is it true that monopolies necessarily hurt? Look at YKK, pretty much a monopoly. Were for years. But when you really had to go, you could count on the zipper (

Is it true that monopolies necessarily hurt? Look at YKK, pretty much a monopoly. Were for years. But when you really had to go, you could count on the zipper (unless is froze, which case buttons are better). https://www.intelligentinvestor.com.au/2012/07/ykk-the-zipping-monopoly https://www.intelligentinvestor.com.au/2012/07/ykk-the-zippi...