You guys should really stop asking this question. The truth remains that many prediction and speculations most times don't come to pass and it's not because they weren't correct or well-predicted but because nobody controls this market. If you are looking for something to give hope, check back in the history of Bitcoin and see for yourself.
This investment is not a "get rich quick" one. Just invest and stop looking at the price!
I agree with you that bitcoin investments don't always see prices as high as USD 20,000, but investing for sufficient profits and price stability will make the bitcoin trade healthier and more investors interested.
Unlike the price of bitcoin USD 20,000 then who will buy, because all bitcoin owners want to sell it for a large profit. Bitcoin is not a rich investment, but bitcoin can make it rich if it is right in trading and observant in investing.