You have seen a flipped pyramid, right? You need to be at the bottom as much as you can be. However nobody can predict where the Bitcoin and Ethereum Pyramids right now are. Maybe we will see Bitcoin at $1m or even $10m (and maybe hyperinflation will help).
 
But what you are saying really is to buy META stock now. To buy google stock now. However unless we find new planets with billions more people there simply is no market of people who will just keep buying giant amounts of it.
 
So for the price to keep multiplying by large amounts simply becomes a mathematical impossibility.
 
Now take a $1m project and imagine how easy it is to go to $100m to $1bn if its a great project with a visionary leader like happen with Chainlink and so many others. And with Bitcoin itself even and Ethereum. Do you want to be at a position in the pyramid where its already fat? Where millions of people will make gigantic profits before you?