That one is easy: Paizo.com gets the money.
They bought their stock and paid their share to Decipher.
I would asume that the lisence allows the ex-owner to sell old stock, as long as that will last, but doesn't allow for new production runs of that old material.
I do not know how Trek RPG.pdf releases fit into this picture. Maybe DriveThru has purchased a number of downloads in advance and once they have been sold, the books will go...