They are and they will go in. They're waiting for clear regulatory policies and stabilization. They don't want to enter into a bubble but they also don't want to risk their money when countries did not make it clear whether they want to embrace it or ban it. Bitcoin still has unclear future in many countries. It would be great if governments made it clear that their attitude towards cryptocurrencies is laissez-faire. I can promise you that when it happens private companies will march in.