Pretty much the title. This influx of games that are slight variations of each other are at the moment flooding the market, which will eventually get over saturated and shut down. Whether that's because the cost to create will be too high(which it already is) or because the demand for MMO's has diminished doesn't matter, all that matters is that it will happen. But I don't think this will be bad for the genre. Sure, maybe for a few years absolutely nothing happens regarding MMO's, but I think a total collapse of the genre will bring about a rebirth or "renaissance" if you will. Imo true change and progress can only come after a big event/ devastation, and that's just what the genre needs.