And physical art only has worth because of its scarcity.
Video content is split between several services and locked into regions. All of it comes with DRM and as far as I know all of it is streamed.
Music is fairing a little better. Most popular music is sold my most stores. I think all of it is DRM free these days. However music is being pulled off Spotify due to moaning about how little per play the copyright holders recieve. There are some dodgy stories emerging about "back room deals" to try to kill off free content on various services.
There's more in fintech, adtech, etc, but there's quite a lot in the art space too.
I've worked in movies for 20 years and those are the two biggest problems that keep hitting me.
On the helping-artists side: There's plenty of space within the film world for startups, and plenty of startups or small tech companies. Most of them are hardware-based, though.