Well to be honest all human history can be described down to greed - all wars, conquests, colonisation, banking, investing, stocks and more. It's all about making profit.

Whatever bad you can say about blockchain and coins, one is undisputed - it's the first time in hundreds of years when an individual can print money and not be called a criminal. And that's a big shift of power.

To elaborate: thanks to blockchain there's nothing stopping you to create a coin for your group, your neighbourhood or your town - or the internet - that if adopted, will be accepted. And thanks to blockchain that coin actually works, is hard to forge, crack or counterfeit.

And the mainstream electricity argument is short-sighted. Humans need energy to evolve (fyi Kardashev scale). Bitcoin et al is the best incentive to actually create innovative, powerful and cheap energy sources.