Folk art is mostly unsung art. It does not fetch millions of dollars.
But it is likely that as a category taken together, it warms a greater number of hearts, (even though the reach of each individual subgroup is usually limited to a local audience,) than the art created for the sake of art by artists.
A few examples from the Cultural Image Library:
These images were taken in Kathmandu Nepal.
More images may be seen in the cultural image library at WOVENSOULS.COM