It just seems that from everything that has happened, and having followed the whole process, the CMA did its due diligence and the way back for MS/ABK is hard to even imagine.
The way MS has escalated its rhetoric already speaks to what they think of their chances, and the UK government responding so quickly doesn't bode well at all.
It also paved the way for EC and FTC. Don't forget EC was already asking weird shit like a download option for their cloud solutions.
Stages of grief are in motion imo