But isn't this technically the same?
There are two things:
- you need to buy ASICs and spend $ on electricity to mine Bitcoin
- you need to spend $ on ETH to stake
I get your point, but I dont think this is exactly the same.
Most ETH rich wallets got their ETH for free. They can just click a few buttons and secure the network with those eth. The security of the system is based in itself.
While nobody got BTC for free, and even early adopters can`t just tranforms their BTC into more BTC passively. They need to create a mining operation, which can`t be done just by interacting with a smartcontract.
They would need to sell their btc, move to a location with cheap energy, buy ASICs, rent a proper place, etc.. The security of the sytem is based in something happening in the real world, phisically.