“This is really going to impact institutions that we take for granted,” Internet Archive director of archiving and data services Jefferson Bailey told the Standard, “like our museums, our historical societies, our public libraries, our academic libraries — just a lot of people that keep information free and accessible and online.”
Pretty much this. Once you put it on the internet it’s out of your control. It might disappear, it might not. Best just to assume it won’t. Unless it’s useful information, then it probably will.