A shame, my first mechanical keyboard was a Filco Majestouch tenkeyless with cherry blue switches, I've used it as a daily driver since 2011 (I just checked when I bought it) and only replaced it a few months ago because some of the keys didn't register properly.
I still have it, I should open it up and clean it again, probably just a dirty contact or something. Solid piece of gear.
currently using a NuPhy Field75 because it looks and sounds cool, lol. The linear magnetic switches are a neat feature but in practice I don't use any features that it theoretically supports.
>probably just a dirty contact or something
I have a Leopold with MX brown keys. Bought in 2012. Last year the left ctrl (or maybe left alt? can't remember) started to sometimes not work. I took the back cover off and the soldering job was horrid everywhere. And on that key the solder was mostly non-existent. I touched it up and a few others. All good now.