I am sure that some millionaires and billionaires out there are already sicken of the government and it's banking system.
Why would they be? The system is designed so that it suits them perfectly, whether it is accounts that are in their name, or some secret ones through which they hide their money in order to pay less tax. They are among the last in the world who would change that system, because if you think that they think that Bitcoin is better than fiat, then why don't they invest their wealth in it?
This is why I strongly believe that Bitcoin will forever keep it's value intact, do make sure that you at least have 50% of your fund in Bitcoin...
If you really believe in Bitcoin, then even 50% is too little - although that is the decision of each individual. For some, it may be too much, especially in the time we are in now, because some have a hard time bearing the fact that their investment has lost value and that they cannot know when it will reach the desired value again.