The only problems I've had were solved with a little jack oil. And my 1st trolly Jack is too heavy for me now; I can't lift it into my PU. So I gave it away.
My 1974 1.5 ton Sears floor jack is still going strong.
Always use proper jack stands, buddy of mine had to lift a car off his father in the late '60's, don't know if it was jack failure or what.
I never pressed him for details. Dad did not make it.
I would say in the not to distant future no one will say toss something like this in the trash and buy a new one. Especially when the prices more than double. The question will be how do I fix it.
I have tossed a couple of jacks that quit working, but the truth is, they probably just needed to be bled. If you know how to bleed them, you can keep a jack working for a long, long time. I don't know about bottle jacks, though.