Bad perspective.

Large non-transactional data is best stored on various bitcoin L2 hosting services. Having backups on several hosting services will be sufficient for redundancy. If one backup is lost, other backups will provide cover.

As an artist, I can't store a high resolution image of my art on bitcoin L1. Why? Because a 4k x 4k (or 6k x 6k) artwork in PNG format is absolutely huge in size.

Why does this matter? It matters because I can't publish high resolution proof-of-work with watermarks on bitcoin L1. As a result, it would be pointless to post my art on bitcoin L1 in any size. It's not the proper medium for that. Anyone can falsely post other people's art without high resolution proof-of-work.

Decentralization of art will involve multiple platform hostings, combined with hosting proof-of-work of the artwork process. There will be companies/groups dedicated to hosting art on bitcoin L2 with costs paid by user traffic and donations.