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4 transactions per second is not very many.

8 gigawatts is a lot.

But that's an artificial limit that has nothing to do with POW.

So you move to Bitcoin Cash, which can do 60 transactions a second. Big deal. It's still orders of magnitude slower than it has to be to be useful.

Blockchains don't scale. Period. If you know of a way to make them scale, publish it and you'll find instant fame and fortune.

The power consumption will continue to increase, and that is purely the fault of POW.

Blockchains don't scale. Period.

If that's your position then changing the POW won't help.

(I know no one cares, but there could be a pragmatic scaling path where you increase on-chain throughput while you do sharding/layer 2 research.)

Can you elaborate?

The Lightning Network is one such initiative for BTC.

>> Blockchains don't scale

They don't need to scale linearly with off-chain transmissions acting as a secondary transmission network.

Does segwit and (eventually) lightning not solve the TX shortcoming?