For your argument, wouldn't history still be a key marketing tactic? If an ISP started to throttle traffic, then reversed their decision, the damage has alread

For your argument, wouldn't history still be a key marketing tactic? If an ISP started to throttle traffic, then reversed their decision, the damage has already been done. The message would switch from "Unlike Comcast, we don't throttle traffic" to "Unlike Comcast, we will never throttle traffic".