Google does give an additional level of comfort - seamless scaling, No-Ops, powerful Big Data tools, flexibility.
I'm going to shamelessly promote one of my opinions on this topic when it comes to BigQuery:
https://cloud.google.com/blog/big-data/2016/02/visualizing-t...
I'm going to bookmark this comment and come back to it when Google decides its getting out of the "cloud" compute business.
Why do you think they will do so?
I'm not just paying for a service. I'm paying because I know AWS is in it for the long haul.
This is great for Spotify, just as AWS was great for Netflix (considering both services are terrible at representing true workloads; they're both just control planes serving static content, videos or music). I don't see it dragging a ton of business into Google, just making their acquisitions easier for people who decide to start on GCP or migrate in.
Just my two cents.
Its the heart of their core competency. Its not their principal mechanism for monetizing that, though outside of the core advertising business its also an avenue that they seem to have made one of the most significant, longest push to make a route to monetization, even in the presence of large, dedicated competitors (behind Apps for Work.)
Obviously, any insufficiently profitable business from any vendor will eventually be closed down, either voluntarily or by business failure, but Google Cloud Platform doesn't seem like a particularly likely candidate for closure on any timescale on which any existing cloud platform would be reliable.
For "Google Scale" computing tasks. Not someone with tens or hundreds of virtual machines.
If Google wants to succeed in certain spaces, they need to commit to them for a duration, and evangelize them. I don't see them doing that anywhere as well as Amazon does with AWS.
Anyways both companies provide SLAs, phone and email support, and consultation for a price.