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No one have the right to abuse someone financially. We just need to make them aware or to educate them. It's their own choice whether they adopt it or not. The only thing we can do is that as human beings, it is our duty to tell him that Bitcoin is a great investment asset, and we can earn profit from it by just holding it. The rest depends on people whether they believe it or not, like Bitcoin, they willingly adopt it or decline it.
In fact, such people do not have any dedication to how rare is Bitcoin. If they knew, they would have gone ahead of us and grabbed Bitcoin, but alas, these poor people do not know anything. We should leave such people to their condition because these people do not want to change their condition. It is better to focus on your investment plan rather than explaining it to them.
Basically you don't need to educate someone directly without them asking first - I mean, your friends will come and ask you once they know you're starting to be successful and making money. Not only friends - people from your family start to wonder what you do for a living when they find out that you already have a lot of money, so it's time to tell and educate them.
Usually people don't care at all when you are poor - but when you start to find ways to change your fate and improve your financial situation, then they will come and ask. I never tell someone first before they start asking questions - no matter who they are.