So in my own opinion, now is not too late to buy Bitcoin because it's still in it early days, and am quite positive that in 10 to 20 years time from now, Bitcoin has the capability of doing 10x to 15x of it current price, so it is best to act now that the opportunity is still there.
if anyone thinks that now is no longer the right time or it is too late to invest in bitcoin because the price is already high, then they are wrong. it is never too late to invest money in bitcoin because now the adoption is not so high globally. also by looking at the increasing adoption from governments and institutions, it will increase the price of bitcoin even more in the next few years. so now is the best time to invest in bitcoin.
the only thing to understand is to only invest using the right strategy, such as DCA or accumulation. most people do not understand this method so they see that the price of bitcoin is too high for them to buy, even though they can buy it with small amounts consistently.
BTC grows in value ever so slightly not because the price go brrr, but because the demand dictates so - when everybody, big and small, want a piece, in different quantities, it's no wonder BTC's value only grows.
So the price is only a number, albeit now it's a big one - the real fight is in the adoption.
Your point is why I feel that many people will get trapped sooner or later, the fact that everyone want a piece of Bitcoin and the gold rush is spiking up like never seen before, is why I feel that 2021 is unfolding right in front of our eyes again, you are a fool if you believe that Bitcoin will keep going up and up forever.
Institution and countries investing in Bitcoin have brainwashed many investors thinking this time is different, they think Bitcoin isn't going to come down ever again, they erase the volatility of Bitcoin off their heads.
No one can spot the top, it's better to be put on the way up than waiting for the real top to happen, it's never too late to buy Bitcoin but know that you are one of those buying the top, thread carefully.