If they didn't make it illegal for home viewers to make their own copies then its possible that we wouldn't have to rely on studios doing proper archiving. As

If they didn't make it illegal for home viewers to make their own copies then its possible that we wouldn't have to rely on studios doing proper archiving. As it stands now most preservation projects start looking for copies of work once the copyright has expired, which is long enough for many things to already be lost, unless copies are found from so called "criminals" who made their own archives in violation of copyright law.