Not affiliated with Rebble, but IMO another worry is that Core Devices takes the store and turns around and says "the app/watchface store is for official Pebble hardware only via the official Pebble phone app." It's not only about Rebble being locked out, but any hypothetical future hardware from someone other than Core Devices.

Part of the excitement of the Pebble OS being open sourced is that someone else could cook up their own watch, either for a different physical style, weird niche features, a successor to Pebble Time Round that Core Devices so far hasn't shown interest in making, etc. Will that happen? Who knows. But I like that it could!

If Core Devices vacuums up the Rebble store, puts Rebble out of business, and says any 3rd party Pebble OS devices aren't allowed to download apps from the main source, that's not good for the open community. I have no idea if Core Devices intends to do that, but it would be nice if they agreed that the store will stay open for everyone with compatible devices.

Whether Rebble has any legal leverage to do that since the data they archived from the original Pebble store isn't legally theirs to begin with, I have no idea. But given that the store's contents only survived because of their efforts, it feels like the right thing to do.