That might be true. But I do not believe Ethereum will be able to hold their gains for long. Sooner or later the price has to go down simply because that is what markets do.
So always remind yourself not to get lost in the mania and try to stay objective. In a market like this, it is easy to think that the good days will never end.
As I remember many users were predicting the role of the next strongest crypto-currency to Litecoin, but Etherum made 300% growth just during the latest month and it's really perspective. I am agree that this bull run can lead forever and Etherum is waiting for a new fall. That's the law of the market of digital currencies and we can't do anything with that.
If to talk about Bitcoin I think there is a truly opporunity to be replaced by more modern and effective crypto-currency. But I will not make any prediction when will it happen.