That reason is called INERTIA. If you really want to change it has to be a very slow process. Think about if big oil converted to Biofuel overnight. There was be a shock to the oil industry and a LOT of people who are dependent on the oil industry would lose their jobs overnight.
Very interesting (and scary). So here's a question from a stock market greenhorn. How do you know if you're holding legit shares or ghost shares? And say for example my account is full of ghost shares...what happens then? If anyone can explain this, I'd appreciate it. Thanks.