I'm not sure why people are not mentioning the fact that there are a limited finite number of writes on every SSD unlike HDDs. It's like astronomically huge and I've never actually personally heard of anyone hitting that number before, but it is a thing that exists. And if we're talking 50 years and it's actually being used for that entire span and writes are happening, then I'm doubtful it would be the components that would go first. But as far as shelf life referring to just sitting there stored away and then plugged back in to a computer in 50 years, yeah that's probably going to be more on the components and the environment it was stored in I would guess.