It would pretty much take a constitutional amendment , for which there would be little public support . 34 ths 38 of the states would have to ratify the amendment which there might only be 15 that is a highly optimistic number that would go for it now . Then even if that all comes to pass you have to depend on people to turn in their guns willingly hahahahahaha no as a lot of states don ' t require firearms to be registered and in the ones that do if you try to forcibly take someones guns you are asking for a fight . There are also just about as many guns as people in the USA . <| sep |> Liberals are certainly idiots , don ' t they ? The grammar in that sentence is Irony defined . <| sep |> Yup , but the main basic issue people are trying to solve is to have readonly installations . With the usr approach you have a rw root with etc and possibly tmp and even run , while usr gets mounted readonly you could then have different instances using the same readonly OS image . To do the same with the approach you suggest you ' d need to mount etc and others on top of the readonly root . It ' s totally feasible , but I personally think that it makes more sense to have the root partition to be the instancespecific one , rather than having a readonly root that mounts some instancespecific etc .