It's just because they don't know, they don't have the knowledge of it so it takes someone to tell them about it so they can have that knowledge, but to most of them they are addicted to it and it can only take the grace of God for them to change automatically.
Some people even if they are aware of such opportunities they never actually take them which is a shame for them. But that is just because their focus isn’t on the future yet. Kids nowadays rarely have that in mind. They just want to have fun so even if they know about crypto, they will not dedicate money for that.