I agree, they are somewhat afraid of what could happen to their investments, since all their life they had focused on what their companies could give and crypto currency is a great threat to them, once people stop investing in their company and found out that their are other options wherein they could also get a huge amount of fortune, people will move their funds, and their company's value will be affected. I also see that for them they had missed out a great opportunity, they wanted to lower the valud sincd they can still influence a lot of people due to fact they are a prominent figure in business and investing, they might want to have a good entrt point, just like what mark cuban did before.