I don’t understand what this ‘scarcity’ would mean. And you give no relevant examples.
Why is this a problem? Ask a creative content creator.
How is blockchain solving this in practice? One example: https://www.niftygateway.com/
If you don't think that's valuable, consider the value that humans put on first edition books, signed original works, ownership of exclusive editions, etc. Everyone can own a copy of "To Kill a Mockingbird" or "Dune" for a few dollars but signed, first editions goes for thousands of dollars.