Turning the knob one way explicitly might raise some anti-trust concerns, however the same motivation can be used to avoid turning the knob the other way and th

Turning the knob one way explicitly might raise some anti-trust concerns, however the same motivation can be used to avoid turning the knob the other way and this can be done much more sneakily without leaving clear evidence - simply don't allocate budget/etc to projects that would turn the knob the other way and you're done.