They create a market for patents which benefits everyone who invents something and patents it. If your startup has a useful patent then (even if you never use the patent) your company is made more valuable because trolls like this exist. Investors will consider how much that patent is worth on the market when valuing your company.
And how would you implement a system that prohibits patent troll behavior? Only the original inventor gets to own the patent? Only people using the technology are allowed to own the patent? Define "using." What if I invent something truly novel and would rather license it to established players instead of bringing it to market myself?
The usual counter-argument is meant to go that companies full of smart people should be able to think up clever inventions all day and sell them to people who know how to build and market them. I'm not sure it really pans out in reality, though.
They create a market for patents which benefits everyone who invents something and patents it. If your startup has a useful patent then (even if you never use the patent) your company is made more valuable because trolls like this exist. Investors will consider how much that patent is worth on the market when valuing your company.
And how would you implement a system that prohibits patent troll behavior? Only the original inventor gets to own the patent? Only people using the technology are allowed to own the patent? Define "using." What if I invent something truly novel and would rather license it to established players instead of bringing it to market myself?