Mandatory licensing would be wild. If LG invent something that makes TVs better should they have to licence it to Samsung? Or should they just be able to make better TVs and use their invention for market differentiation?
LG could ignore trolls and morons - but if Samsung makes a good-faith, fair offer to license the technology, they should have to have a good reason for saying no beyond "we don't feel like it."
One company, Cobasys (owned by an oil company!) purposefully refused to license NiMH technology in transportation. The patent system was never intended to be used like a weapon to protect a market.
This doesn't seem true to me. Nothing about the design of the patent system makes sense if the intent if not to use it like a weapon to let a giant company protect a whole area of the market from competition.