I believed Buffet is really investing in bitcoin even they din't tell or show publicly,of course for privacy and security reason. And we need people like buffet as a bigtime investors of bitcoin industry.
I don't think all of them will invest in Bitcoin.
I mean these people are well known when it comes to these types of industry and I think even if only one of those people invest on Bitcoin, some followers or some people that take a reference in investing follow him. I mean he is one of the richest people in this world, who would not follow him right? If that is really happening, that might really make a change to the price.