Facebook to Allow Users to Upload Photos to Google

Sharing Photos among services. I think the main problem will be consumers will not understand the implications, given that different services treat security differently.   Also variance in global regulation.  Here first in the UK.

Facebook to let users upload all photos to Google in BBC
Facebook has launched a tool that will enable members to transfer photos and videos they have uploaded to the platform to Google Photos.

The service would initially roll out in Ireland and then, in 2020, across the world, Facebook said.

It also said it planned to include other services in future as part of its commitment to "data portability".  The Open Rights Group campaign welcomed the move but said it needed to extend beyond the technology giants.

'Rogue actors'
"It's important that Facebook and other companies allow you to move data about," said ORG director Jim Killock.

"It's critical that this kind of portability is not just for a handful of global giants, if it is going to encourage competition.    "There will also be potential privacy issues with data portability as users will potentially take risks when they move data to third parties, so companies and regulators will need to develop ways that deal with rogue actors."  ....' 

Facebook posts about potential security risks:   https://engineering.fb.com/security/data-transfer-project/   Data Transfer Project: Enabling portability of photos and videos between services.