They probably only got clearance from their lawyers (or IBM’s lawyers) just now.
A lot of proprietary software includes bits from other proprietary software that they don’t have the rights to open-source. And untangling and removing those bits takes time and effort.
Cool, but why’s that all of a sudden?
Probably Microsoft is trying to “save” some of its reputation after adding ads to Windows 11 one more time
They found a new 0-day exploit
They probably only got clearance from their lawyers (or IBM’s lawyers) just now.
A lot of proprietary software includes bits from other proprietary software that they don’t have the rights to open-source. And untangling and removing those bits takes time and effort.