This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
To some extent they likely do. Nobody truly knows their “proprietary engine” other than dedicated modders and bethesda staff.
There’s definitely a level of negotiation that goes on between Microsoft and bethesda, which, outside of their massive titles Skyrim and Fallout, has successful games published (not developed) by Bethesda, like Doom, Deathloop, Dishonored, among others. If Microsoft makes demands, they could backstab the devs of whatever game they make, just like they did to new vegas.
So yeah, I doubt they’d let it happen again.