This is sort of a tragedy-of-the-commons situation. Very few people want to stand up and be counted (Sparkfun aside), yet it's the few who do who keep the bottom feeders[0] in check.
[0] I've been advised by lawyers to just pay them off, as it's "cheaper than dealing with the bottom feeders". Some things matter more than money, and on the few occasions I've pushed it to the wire the chancers have slunk away. It's still expensive though - and maybe only small companies can do it, because for big companies it would be internally expensive/potentially ruinous/worries the C suite it might affect the share price.
[0] I've been advised by lawyers to just pay them off, as it's "cheaper than dealing with the bottom feeders". Some things matter more than money, and on the few occasions I've pushed it to the wire the chancers have slunk away. It's still expensive though - and maybe only small companies can do it, because for big companies it would be internally expensive/potentially ruinous/worries the C suite it might affect the share price.