Most people know how much ranch they want

If that were true, we wouldn’t be having this discussion. It’s impossible to know how much condiment you need when you haven’t seen the portion size.

most restaurants give about the same

Experience has taught me otherwise. Most restaurants use the same-sized container for condiments, but you don’t know if you’re gonna get three ounces or half of one. Regardless, a table waiter complaining about waiting tables is not something that triggers my empathy.