Will Cardano take second place on Ethereum?

What will we discuss after Ethereum stops using miners? Miners, miner developers, pools get $13 million every day. This is a big loss for most people. And with the price of ethereum over $ 4,000, this amount is about 50 million

Is Cardano the closest to Ethereum? I think its Avalanche, 🤔 anyways which ever it is I planned to become rich and the only way is if BTC goes down to 10,000$ and Ethereum goes to hundreds once again.