Talking about "Coinbase" really means their GDAX exchange.  

Their re-branding to GDAX "Global Digital Asset eXchange" a while back from the simpler "Coinbase Exchange" is clearly telegraphing their long-term objective to be a worldwide trading source of all kinds of new 'digital assets' and NOT just a bitcoin-only wallet or a simple BTC sales channel, thru bank accounts (which is what they started out as).

It's this longer-term vision that I think is more important to guys like Armstrong at the helm, i.e. what makes me think in terms of them maintaining appearance of strong competitive responses to other exchanges like Jesse Powell's Kraken.

Think of the TV show "Silicon Valley" and how the personalities in that show all took everything so personal in their competitive responses to what other people did, LOL.  Sure, the show's a comedy and maybe extreme form of farce but OTOH this shit probably isn't too far off in real life, LOL.

I can just see Brian Armstrong saying something like, "Oh man sonofabitch that ponytail fuckwad Powell's already added Monero ahead of us???  Well, I'll show them who's boss!  Let's get both Monero and Dash too, launched on our site together!!  Yeah!!!  That's the ticket!!!!  Hahahahahaha"