If that had been specified, would it have avoided this situation? If that's the case, it's amazing nobody did that.
There is no set requirement, because who the hell knows what some idiot may hang on their key-chain! All the while, it has to be loose enough that a 90+year old weakling can turn it with ease and start the car.
Exactly how do you figure that “standard?”
The person who wants to hang pictures, keyfobs, mementos, store passes, etc... is going to need a switch that will handle 25 pounds of resistance.
The 90+ year old weakling needs it to have no more than a 2-5 pound resistance.