'Rocket League' will die without cross-console multiplayer

All online games eventually die. But the difference between the original version of World of Warcraft and, say, Call of Duty: Ghosts is that WoW was more of a service on an open system (PC). Players were able to gradually migrate to its annual expansions, while remaining a part of the overall population. Comparatively, CoD is a franchise with annual sequels on several different pieces of hardware, each with cordoned off players who jump from one game to the next. But sometimes you don't want to stop playing a game just because seemingly everyone has moved on after 14 months.