We might have better interop with proprietary software. Maybe. It's possible that the BSDs would have more hardware support as they could just borrow it from Linux.
Companies would probably keep an even tighter guard on their code. They may stop contributing to FOSS completely without the protection of the GPL.
We'd probably find all sorts of weird binaries being thrown around the place, as seems to happen in the android scene, where people just splice stuff together without considering any of this stuff. Support and consistency would be a nightmare. People would be less able to build on each others work as there would be no necessity for anyone to publish anything if they didn't want to or couldn't be bothered.
