So they decided they don't want to maintain the business and the infrastructure to support commercial Parse service. But they decided they would create an open source version, which is currently maintained by the engineers paid by Facebook to work on Parse. So going forward, Facebook will likely continue to handle the Parse platform project? Kudos to the great handling of a decommission service, but at the same time,…
I would guess that the FB engineers won't work on it for more than a few months and probably not at all after the shutdown.
More likely, Zuckerberg realizes that the best way to control developers and build an Internet-wide platform is to control the (open source) code they're using. Parse is the backend version of React in terms of developer turf wars.
The parse service may be shutting down, but the parse platform will only grow in popularity, and Facebook will continue to benefit from the control it exerts over the decision making of developers.