Surely by now...
People know not to rely on Google products for anything of major importance?
They are way too keen on shutting down products that have lots of users (be it hardware or software).
Anon because of this:
A place I worked, even though Google (paid for) mapping APIs likely to stay up and running, took decision to use different paid for mapping APIs, just because Google cannot be trusted for long term support and didn't want anything really important reliant on them when rug could be pulled at any time.
I'm sure plenty of other businesses take a similar worst case scenario with Google - a significant, hidden, revenue loss based on their past history.