The UNIX world and Windows would keep taking BSD code, assuming the court case would have ended the same way as it did, and that was it.
The GPL haters tend to forget that GCC was pretty much ignored until Sun started the trend to split UNIX into user and developer editions, and without GNU there wouldn't be a userland for Linus to plug into Linux.
Whatever, all UNIX clones that came after Linux (specially for IoT) are BSD/MIT based, so the long term roadmap is already quite obvious.