The paintings may communicate even better because people are lazy and they can look at a painting with less effort than they can read a poem.
Television is certainly a writers-led medium. They're the ones who are there, they're the ones that are conferencing or whatever, with directors coming and going.
In a way, the history of jazz's development is a small mirror of classical music's development through the centuries. Now jazz is a living form of original music, while classical music has gotten to the end of its cycle in terms of exploring its form.