It's the co-evolution of parasite and host. These firms are like tape worms, siphoning off nutrients in the hopes the host won't notice. But the host is conti

It's the co-evolution of parasite and host. These firms are like tape worms, siphoning off nutrients in the hopes the host won't notice. But the host is continually evolving new mechanisms that make it difficult for the parasite to survive. The economy is growing, changing and becoming more efficient, thanks to the internet. If history is any indication, easy-money traders are headed for extinction.