Since most games were multi-platform, it usually always came down to the handful of exclusives released on each platform. The Playstation exclusives (Uncharted, TLOU, Shadow of the Colossus, God of War, Ratchet & Clank, etc.) have always had much more appeal to me than the XBox exclusives (Halo, Gears of War, Forza, Fable, Sea of Thieves, etc.).
Now that Microsoft has purchased ZeniMax, there is the disctinct possibility that some former multiplatform franchises could become XBox exclusive at some point (Fallout, Doom, Elder Scrolls, Dishonored). That would at least be cause to re-evaluate that preference of platform-exclusives.
A lot of people are going nuts over Game Pass. Personally, I have no use for a gaming subscription model. I don't have all that much time for gaming, and I've been known to take 2-3 years to actually finish a game. So far, the games on Game Pass seem to be rotating, just recently a friend told me "I finally started RDR2, and a week later it's removed from Game Pass". So this model of gaming is not for me. But I can see how it appeals to younger people who have much more time for gaming and finish their games in less than a few years.