The problem is that competition in chess, in games, has always been for the sake of the game itself and the fun in playing it. 'game playing' is its own reward, there is no other entity interested in paying for results of chess games, even 'interesting' chess games. If there was, you could setup instances of Stockfish to play against each other and dominate that market.
This is not true of the artist market. While yes, many artists get into it for the fun/satisfaction of producing their own artworks, the reason that they can remain in it long term is that there are other entities in paying for the results of their work. See: game studios, film studios, etc. Before AI, the only way to get the assets for these various projects produced was by paying artists/experts for their work. Now, the production of those building blocks can be automated.