And how would this affect the original open BSD-based BMC firmware which would be available? If the corporations want to maintain their own fork, it's on them.
The original BSD release will stay open and free for everyone to utilize.
How can you trust that a closed source OpenBSD fork is secure when there's no way to audit the quality (or lack thereof) in the firmware the vendor gives you?
If it's GPL you can at least interrogate the code release and make an informed decision
The original BSD release will stay open and free for everyone to utilize.