Even 20 years ago mices weren't always that reliable. I used to have a Microsoft ball mouse from the late nineties and I remember the micro switch giving up after about 4 years. Even the replacements (albeit much cheaper/more generic brands) from the time didn't fare better, but at least by that point they were all optical.

And I say "replacements" because they all didn't last very long, until I got the memo and started buying decent stuff from brands like... logitech. And then there is the conundrum of going with something even more "premium" than a logitech, there's very little guarantee it's really gonna last. You may be paying twice as much for it but it still ends up lasting about as long.