Except Coinbase is totally fucked right now.
I would advise anyone to not use their service. If you have any issue with your account you will be waiting weeks or months for a response from support.
They are too busy spending money on facebook ads to hire personnel or make improvements to the website/ backend.
(Website was down several times yesterday.)
Maybe things will improve in the coming months but for now Monero doesn't need them to be successful. Its way undervalued and if you don't own some of these coins in a few years you are going to regret it. I would be very surprised if XMR wasn't $100 by this time next year.
Monero is the GNU Linux of the Crypto world. It doesn't need ads or corporate sponsors. Hard work and good code will prevail over time. This is a long-term project.
Whether Coinbase is fucked or not, I believe that Coinbase adoption would be great for Monero. To extend your analogy, if Monero is the linux of Crypto then Coinbase could do for it what Red Hat did for linux.
Monero probably isn't going to be added to Coinbase anytime soon.
I was listening to a talk from Charlie Lee (who works at Coinbase). He was talking about LTC and the potential of getting it added to Coinbase. Anyway, he mentioned that LTC volume on GDAX (exchange owned by Coinbase) has to be consistently high enough before Coinbase would consider adding LTC.
Monero isn't even listed on GDAX. That will probably have to be the first step.
Why does Coinbase only list coins that have high volume on GDAX? Cause they don't want to rely on / go to a 3rd party exchange to source their coins.