When my mother-in-law died, I immediately registered a domain for her name and created a website and added the obituary, eulogy, and a photo gallery and shared that with friends and family for exactly this reason.
That's cool, but doesn't it have the same problem? When you die or decide to stop paying, the website dies too.
Archive.org
People are going to be surprised Pikachu when that goes down, either from poking the law bear or just because everything dies eventually.
In 1000 years, you're unlikely to find any given book, hard drive, or newspaper that is still legible, but accessing any of those is far more likely than finding an Internet Archive datacenter, spinning it back up, and accessing the contents.