Thoughts?
Being millionaire doesn't necessarily mean somebody is smart, understand tech and want common good.
Many are too old to understand Bitcoin.
Many have businesses related to banking system or gold, hence they'll be against Bitcoin.
Many trust kinda blindly on what other rich people (usually tied to central banks) told them.
Bitcoin markets are unregulated or poorly regulated and many will either fear that, either come against that.
Bitcoin is pretty easy to steal if somebody doesn't have the patience to learn about how to keep it safely.
Bitcoin allows tax evasion, allows hiding dirty money and so on.
Bitcoin is not perfect and some of these guys will not accept anything less perfect (as they understand that) than the banking system they already know and trust.
But don't worry. All these problems are temporary. We just need to go on. More and more people find the benefits of Bitcoin by every day passing by.