Maybe, I've never bought expensive art. But I know people who have, and I've sat around their kitchen surrounded by 10's of millions of dollars worth of art. It was mostly kept covered up from sunlight, but it was not in a warehouse.

With NFTs, another warehouse can also note that the art belongs to you and you have equal legal rights to enjoy and sell the art as the original owner.

You're missing the point.

When you buy a piece of art, you own the piece of art.

When you buy an NFT, you own a row in a fundamentally meaningless database that points to some image on the internet. The database has no value, no one recognizes it, you don't own the image.

There is a fundamental difference there.

In these cases though people are buying the art not for the sake of actually owning the art but for another use that it's high value provides them. Which is an apt comparison to NFTs because they mostly seem to be used for speculation.

Before the 20th century technological advancements, when you bought a piece of art you not only owned it, you were in control of who gets to actually see it.