The company's decision is based in part upon feedback from retail partners, which suggested that such a product would be only modestly successful in the marketplace. Samsung also pointed to the lack of education about Windows RT, and suggested that it would require too much of an investment to properly inform consumers of the differences between it and Windows 8.
Samsung confirms no Windows RT tablets for US markets, blames tepid retail demand
and: Samsung Loses Interest in Windows RT Tablets, What About You? | Maximum PC