The conspiracy theory is that Rockstar Games no longer makes GTA single player DLC because of all the money they make on Shark Cards microtransactions, which give players in - game cash instantly. (kotaku.com)
GTA Online thrives on Shark Cards, which see players paying real cash for in - game currency, and their recently released NBA 2K18 has an overwhelming number of microtransactions of its own. (rdr2.com)
Some folks are wary of another new open world online game from Rockstar as GTA Online has been characterized by some as a nightmarish hellscape of Shark Card driven microtransactions. (shacknews.com)