Bitcoin went up from $1 to $4000 in 10 years

But at $4000 who will buy bitcoins. Only buyers at $4000 will push people into buying Bitcoin and then they will sell and earn their easy profits.
But $4000 is lost of money is USA. Bitcoin growth story looks over.
I buy your bitcoin at $4.000!
Bitcoins are now sold for around $8.500 and I think the question you should ask is, who want to sell their bitcoins for just $ 8.500?