That could theoretically even be harmful to INSY. Theoretically I say because INSY makes none of its pharmaceutical grade CBD from hemp.
Hemp has a very small amount of TCH in its total mass. Drugs offered for sale from hemp are very "dirty." INSY may be able to to get a highly purified CBD from hemp but the cost might be prohibitive.
Still and all, legalizing CBD from hemp would be another break in the insane barriers constructed against Cannabis.