I am a huge fan of Ethereum (you can tell by my handle!) and think its transition to proof of stake will revolutionize finance, but I wouldn't go as far as to say it will replace bitcoin. Bitcoin has the first-mover advantage and as difficult as it may be for most altcoin bagholders to admit, they need bitcoin to succeed because the whole crypto space depends on bitcoin. If bitcoin fails, this will set the industry back maybe five or 10 years, as Ivan on Tech says. I personally believe in diversification, so I like Ethereum, bitcoin, stocks, gold, and other forms of investments.

Do I think there is a remote possibility Ethereum can overtake bitcoin? Of course! But this would require mainstream adoption. It would require major institutions to suddenly back Ethereum, and for Ethereum to be promoted everywhere by all of the major banks. I think Ethereum will be big, but I think bitcoin will always be bigger. I could be wrong tho!