Comment by ahofmann
I wondered also, but then I've read to the end of the article. The article seems to be a bit disingenuous, because the real, real reason seems to be, that the Bob Ross Inc. respects the wish of Bob Ross to not make his paintings a commodity.
They put him in a Mountain Dew ad: https://www.youtube.com/watch?v=q51bomzSQ_s
The Kowalskis sued to exclude Bob Ross from the company bearing his name in the final days of his life, when he was struggling with cancer.
So let me carefully suggest that Bob Ross Inc. is not as benevolently looking out to preserve the heritage and legacy of Bob Ross as you might think.