Painters were necessary as part of communications and the part of doing business. First from recording historical events/people then later advertising.

The artistic aspect evolved from that need.

Sculptors much less so but had their roots in architecture (church building, plumbing systems, etc)

Practical need first, artistic expression later.

It's not until you get your civilization to a point where the basic necessities are easily met and you have an affluent society that can afford art for arts basis.

That also doesn't mean that "art" wasn't done on the side - families still entertained themselves in the evenings along with community events (based around harvest/planting season... naturally) and basic crafting of quilting, clothes making, furniture making, etc; But it would typically have to be of a practical nature as well.

Disneyland can't exist without a highly affluent society behind it that has the dollars AND time to go to it.