SEGA, Capcom, Konami, EA...
They will only sell if their main stakeholders want to sell. And if that would be the case, they may not be interested to sell to MS.
What will stop MS from buying their way to the top?
MS has a very small portion of the market, and ABK represents a very small portion of the market too. Meaning that for regulators it's ok this or smaller acquisitions. Regulators would be more worried seeing the market leader Sony making big acquisitions because that could hurt competition way more.
Companies not wanting to sell, or prefering to sell to others will stop them from making big acquisitions at some point. Or well, maybe some day MS stakeholders get tired of losing billions with their gaming division and mandate to stop it.
I think they won't continue buying big publishers, but instead during the next few years they will buy some gamedev studios as could be Asobo, CD Project etc.
No, but if you're considered a monopoly yes.
Remember kids, monopoly is never a good thing.
Gaming is very far from being a monopoly, specially in mobile or PC. And in consoles and game subs, MS is in the last position with their direct competitor outperforming them for at least 2:1 in most key metrics. Even adding ABK they'll continue in the last position.
Even if in 10 years or so CoD becomes Xbox console exclusive (note: Xbox maybe doesn't exist anymore in 10 years from now) pretty likely they will continue the last one.
There's no monopoly in gaming, and if someone has monopoly isn't MS at all.
Says who? Maybe a few small acquisitions like Crystal Dynamics.
Embracer Group bought Crystal Dynamics.
Yup, Sony and MS both plan to keep buying studios. They have announced that publicly.
Yes, but this doesn't mean they'll buy companies tomorrow. Sony said they'll stop acquisitions for a while and will continue in the middle to long term (meaning, minimum a couple years from now).