Stadia will have many of the same games as Xbox and PlayStation, but Google will have to convince gamers to start building a library for Stadia instead of more well-known platforms. While Google is responsible some of the most popular technology in the world, that credibility doesn't hold the same weight in the world of entertainment.
For years, competition between Xbox, PlayStation, and Nintendo has largely swayed based on exclusive content. Each platform has their own legendary franchises; Nintendo has "Super Mario," "Zelda" and "Pokémon;" Sony has "The Last of Us," "God of War," and now "Spider-Man;" Xbox has franchises like "Halo," "Gears of War," and "Forza Motorsport."
Every game confirmed for Stadia's November launch will be playable on another platform. Google has created an in-house game studio called Stadia Games and Entertainment to develop exclusive titles, but none of them will be ready for 2020.
Exclusive games play a major factor when it comes to investing in a platform, and Stadia won't have anything unique to offer when it launches.