The only people making chairs by hand today are exceptionally well-paid artisanal craft carpenters and/or designers/studios.
It's not at all unusual for popular/iconic furniture designs to be copyrighted.
Reality is people who invent truly original, useful, desirable things are the most important human beings on the planet.
Nothing that makes civilisation what it is has happened without original inventiveness and creativity. It's the single most important resource there is.
These people should be encouraged and rewarded, whether it's in academia, industry, as freelance inventors/creators, or in some other way.
It's debatable if the current copyright system is the best way to do that, because often it isn't, for all kinds of reasons.
But the principle remains. Destroy rewards for original invention and creativity and you destroy all progress.