This isnt about some tiny amount of revenue, cops hate this dangerous practice of an anal weirdo throwing a wrench into freeway traffic flow.
A single car blocking the fast lane can cause havoc over all the lanes.
Traffic flow is everything on the freeway, it is more important than if that flow is at 55 or 65, or 75.
Not so much their mind on autopilot as their car on cruise control and unwilling to step on the gas because (and you've seen it here) "They're going fast enough, and if they're going fast enough, then you shouldn't go any faster either"