I have a pair of tweezers I bought from an electronic supply house 30 years ago for what $10. They are hard nickel tool steel. Sharp as ever.
The ones we buy at work last about 6 months before the tips get ruined. Why because it's cheaper to make them out of soft stainless. And there is no competition they are all crap.
Similarly it is basically impossible to buy good files today, because they're all somewhat dull and don't last. I have German, French and Swiss made files from well over forty years ago, which I received in their original wax paper packaging. They are much sharper now and seem to last longer than what I can buy new from the same German manufacturer today.
It is like someone forgot how to make proper file steel. Real shame. You'd maybe expect them to get a little bit better, for them to last longer, because more modern steels and better process controls for heat treating etc. may be used, but evidently this isn't the case.
And that's because people have gotten used to be able to buy a new one when the old one is crap - actually, most people never get to that point, they just lose them in the piles of stuff they have. Few people use tweezers that much.
The ones we buy at work last about 6 months before the tips get ruined. Why because it's cheaper to make them out of soft stainless. And there is no competition they are all crap.