In 1976 Ronald Wayne sold his 10% share in Apple computers for $800. If he had held his stake today it would be worth $60,000,000,000 (60 billion). This why i will never sell my Bitcoin for fiat, i'll keep it till i dont have to.
https://www.youtube.com/watch?v=bvWh8sh_wPYYour comparison is on place, and I watched about village in Florida where everyone have shares from coca-cola, some adviser told them to buy that and hold coca-cola shares more then 50 years ago, and I`m sure there is bunch of other similar cases in history. But there is one little catch, not everyone of us is in position to wait and hold. While you wait and holding live is passing, there are expenses and needs, and not to mention critical and accidental situations where we need to pay something a lot more then we can afford to pay. First you need to have enough money to pay bills, to have for food, clothes, and fun with your family, maybe to afford some vocations, and only then you can think about saving, but man I work for less then 4000 $ a year... its less then 4 bitcoins each year at the moment, from where to save?
Edit: Yes I can save from my gambling, but then I will ruin even that one chance for making a bit more money then I currently earn.