many people expect that to happen. the price of eth reaches $4000 but I think it's too much, you have to think realistically where the current price of eth is very low to reach the highest price it takes a long time especially now that there are many altcoins that have sprung up. I think eth will go up in price before 2021 but it won't reach $4000
It's also considerable that the value may grow to that point if this incoming halving will bring huge investment inside the market, we experienced that last 2017 where almost all those solid project jumped to high, considering ETH being next to BTC it will receive good support from investors that will look for good diversions and maximize their opportunities to earned more inside this venue of investment.
The current value is showing a good position to place your investment, you need to take the risk waiting for good level and earned decent from this coin.