I don't think that it is necessarily the case that with all competing technologies, that it has to be "there's not enough room for the both of us" - I think that there is scope for Bitcoin and Ethereum to coexist together.

Whilst listening to Let's Talk Bitcoin's most recent Podcast (https://letstalkbitcoin.com/blog/post/lets-talk-bitcoin-295-where-are-we) , Andreas Antonopoulos actually articulated the same point far more clearly than I ever could; that Bitcoin is far from dead or stagnant and that Ethereum is something that compliments Bitcoin instead of succeeding it.