patent wars
Patents are a huge economic drain. So much money and unproductive effort goes into patent acquisition, followed inevitably by patent dick wars. The final proof of this is the acquisition of large patent libraries to be used by big corporations in a Mutually Assured Destruction scenario, where the big businesses cannot sue each other without fear of reproach, but they can sue (only) the small businesses that are the real innovators in our economy.
I must have written thousands of words on why parents are bad over the years, and finally people are coming around. Mark Cuban of Shark Tank knows this, because, just like me, Mark is not an idiot.