I think the main thing that car rental companies concern the most is still money issue. Aging limitation is one way to could somehow protect both a company and consumers from risking car accident. Of all the car accidents, young drivers are responsible for the big part of them. It is true that, in most countries, people marks young drivers as beginners of driving although it could be negative stereotype toward the youth. It’s kind of unfair for those “good-drivers” that they got the bad name at the first place. To protest young drivers rights, I think they ask for a talk with companies and make a deal good for both of renting and driving.