Can you guys actually see this happening though? I mean temporarily yes it probably can as things can quite close last year but I think if it happens it happens briefly and then things go back to normal. Just dont envision Ethereum being worth one fifth of Bitcoin when it is all said and done but I could be supremely wrong.
About two years ago when they first started to talk about the flippening, it seemed impossible.
But as of today, Bitcoin's market cap is $128bn and Ethereum's is $75 bn. If you all in all the ICOs built on Ethereum's platform, it's already surpassed bitcoin.
Then look at the number of transactions done in a 24 hour period:
https://bitinfocharts.com/bitcoin had 238,476, but Ethereum had 887,933. So on that measure Ethereum has already surpassed bitcoin.
All that is left is merchant adoption. Since bitcoin had that fee problem last december, merchants have been adding other alts. They usually Litecoin and Bitcoincash, but lots are adding Ethereum as well. The more this continues, the more of a network effect ethereum will have.