If you buy a bitcoin in the price of 9000$, yes it may drop, but we have clearly seen that this is what it does. It goes up and down. If you have 1 million dollars and buy 100BTC (900.000$) then the only thing you have to do is wait. Because someday it will pass that number and you will have profit. Am I wrong?
One of the most common reasons why people do not invest in bitcoin is because they find the volatility to be too extreme, a significant amount of investors are conservative and they are fine earning 5% to 10% per year and something like bitcoin that can make moves like that in a single day or even in a single hour scares them away, they want consistent profits over a long period of time and while bitcoin can also offer that we cannot deny that it is a roller coaster and many investors do not want.