If you do one thing long enough, even if you’re mediocre, by virtue of being the last man standing, you’ll become a domain expert.
Let me give you the name "Bitcoin", you will be making good returns if you just keep buying the Bitcoin alone for how long you can. People who bought them in 2010-14 are probably enjoying their life in their billion dollar mansions.
Also it's not just about buying, it's also about holding long, people get the satisfaction after making 50% or even 200% returns but only very few are hungry to make it bigger than ever.
One thing I know is bitcoin might not necessarily give a gigantic growth like he did from last ten years ago to this year, bitcoin will hardly rise in such monumental degree in the next ten years because the more the rapid growth seen by the bitcoin, the more it becomes standardized and mature to face such growth again. It is true to say that Bitcoin will continue to see a growth and more likely to hit a new ATH, however the level of its acceptance will to a large extent determine its degree of growth over the coming years. There's a high potential of Bitcoin growing twice it's current level and value but the possibility will be utterly determined by the adoption rate across countries. Bitcoin is already mature enough to grow steadily under the individuals and investors level, it will now require major adoption at countries and international organizations level, to hit another rapid growth in my own opinion.