Just because they stopped making those games that doesn't equal a bad company. You do realize that right? Has it ever crossed your mind that maybe it wasn't making enough of a profit to warrant production of those titles? I know for a fact tennis is a hard sell and EA had a similar problem with a similar sport in golf. They knew damn well that taking Tiger Woods off the branding would result in even lower sells so they threw Rory on it. College basketball games still aren't profitable enough to warrant paying for the licenses either (college football only becomes a profit because of how big football is in this country but even then it's a chore trying to sell a game with generic rosters). MLB wasn't really selling and neither was NHL (funny thing is now people appreciate the NHL 2k series since all they have is the EA game).
Also, just because most didn't like 2k15 does not mean they didn't enjoy it as a whole, or have good moments with the game. You act as if because some people had some issues that automatically means VC sold you NBA 09: The Life or something. People were frustrated, when they're frustrated they vent (they also exaggerate and make hyperbolic statements, but I digress). Throw in the steps 2k16 seems to have taken to make the entire experience better, and you have everything that thread of saying goodbye to 2k15 is.