Haven't followed all that closely for some other games, but it very much seems like the model for NBA2k is to release a new game with some minor patches each year, charge 70$, then spend the majority of that year crafting patches for the card game to keep whales interested in constantly spending on new packs(which are promptly devalued on the next release, and straight up killing the prior year's game's online service, makes them entirely worthless the next year).