I wonder how this will affect adoption of CockroachDB [1], which was inspired by Spanner and supposedly an open source equivalent. I'd imagine that Spanner is a rather compelling choice, since they don't have to host it themselves. As far as I know, CockroachDB currently does not support providing CockroachDB as a service (but it is on their roadmap) [2].
[1] https://www.cockroachlabs.com/docs/frequently-asked-question...
[2] https://www.cockroachlabs.com/docs/frequently-asked-question...