2x-3x is pretty much just $1.6 trillion - $2.4 trillion in marketcap. Do you really think that's the highest that bitcoin can go lol? Even gold alone is like $10 trillion in marketcap.
It will do more but you wont get rich fast from it anymore.
eth is the safest bet to get rich with medium speed
This is wide-guessing to me because Bitcoin could go higher than what you think.I don't think it has always been about getting rich fast or quick and it has been a notion that some especially the newbies think of investing in cryptocurrencies even though some have been lucky with their investment but not aught to be the focus.
I believe Bitcoin has been and will always be a better investment when it comes to crypto and the rest will play catch up.