Ethereum is still suitable for investment, but for those who are not afraid of prices that are too high and certainly for those who don't think too much about the money they have, because Ethereum does not provide a guarantee that you can become rich from what you invest in Ethereum.
Well, I'm not quite sure about this. ETH is still a good investment choice and many people can still become rich thanks to ETH. In the 2020 cycle, ETH increased from $80 to $4.9K ~ +5400%, which is really a very good growth rate for any investment fund or individual investor in the financial market. Although it has a weaker price performance than AXS or SOL, ETH is still a better choice than most ALTS in this market.
Another important reason why ETH is worth choosing is its extremely high liquidity, only follow USDT and BTC, so investors can easily liquidate ETH with extremely low slippage. It is understandable that many investment funds are pouring millions of $ into ETH instead of many other ALTS with weaker liquidity.