Why? The PoS minimum 32 isn't high, We're talking about around 60000€ like investment.
There are a lot of staking pools that were created as soon as ETH 2.0 was announced and hence even small holders are able to enter into staking pools without much technical knowledge. Further, yes, the move towards ETH 2.0 promotes a sustainable growth and can only be described as an improvement over the Bitcoin in terms of mining.
Also, the cost of transaction on ETH 2.0 will make it a very attractive blockchain.