I remember when the Smithsonian decided to store historic images on... wait for it... laserdisc. (My spellchecker doesn't recognize the word!)
But you're right, any kitchen table tinkerer could make a laserdisc reader. Figuring out the irrational mystery that is NTSC would probably be the hard part.I actually used some laserdiscs recently. I was moving, and used them to protect vinyl LPs.
Eventually, I expect that laserdiscs will be read holographically in one flash of laser light. The NTSC->(something sane) conversion will still have to be done in software.