Embrace, extend an extinguish applies even more to Google's killing support for CalDAV in favor of it's own protocol now that pretty much everyone is using Google Calendar.
Meet the new boss, same as the old boss.
Only where Microsoft at least still cared about keeping it's (corporate) customers happy (and therefor providing some long term certainty), the only customers Google cares about are advertisers. They will ruthlessly kill off whatever doesn't suit them.
Being the product in Google's universe will suck worse than being the reluctant consumer in Microsoft's universe.
Meet the new boss, same as the old boss.
Only where Microsoft at least still cared about keeping it's (corporate) customers happy (and therefor providing some long term certainty), the only customers Google cares about are advertisers. They will ruthlessly kill off whatever doesn't suit them.
Being the product in Google's universe will suck worse than being the reluctant consumer in Microsoft's universe.