I'm also not sure if within 2 years Bitcoin can reach the price of $ 20,000. Because this price is certainly too high to achieve and definitely takes a very long time to achieve this high value. Yes, I think it should take years to reach it.
This is not impossible for bitcoin to reach. 20,000 dollars is really achievable in a sense that bitcoin has already resided above 18,000 dollars last year. Within coming 2 years, it is going to cross 50,000 dollars. It is bitcoin, not some tiny altcoin. We need to expect bigger things from bitcoin and support it for that. The number of investors is going to double in the coming years and so will be the price of bitcoin.