> I don't see Instagram, Facebook, etc. using that code to secure their apps, they won't license their Android clients as GPLv3 They might license the code und

> I don't see Instagram, Facebook, etc. using that code to secure their apps, they won't license their Android clients as GPLv3 They might license the code under a non-exclusive license with different terms. I.e. the copyright holder is free to license the same source code under various licenses. So, e.g. I could license some code to the community under GPL, but I could also license it closed-source to a corp for a fee.