I control it because I almost never take the time to make reservations. In fact, places in which a reservation is necessary almost by definition means a degraded experience for me.
I stopped going to those restaurants because of the number of times that I've shown up only to be informed that the wait list is over an hour long and we've ended up having to eat at the greasy spoon down the road because we're hungry and have run out of time.
If I can't make reservations (directly with the establishment -- things like OpenTable don't count), I won't eat at the establishment. The gamble isn't worth it.
For example, my wife and I went to a PF Changs on a holiday. We had a reservation we scheduled at least a week ahead of time, but it meant nothing, we were put at the end of the queue. It wouldn't have made a difference if we never made the reservation at all.