[halostatue]

The GNU GPL does not place obligations on a platform vendor.

If Applidium provides the source (or even re-signable binaries), then anyone with the platform vendor's normal access mechanisms can modify and install on their system. They can even go through the platform vendor's steps required to distribute.

(Yes, you can send re-signable binaries; Jesse Grosjean did this with early versions of PlainText. You only have to pay the access fee of $99/year to install it on your own devices.)

[jbk]

Here, the issue is about usage rights, not redistribution.