Actually, there is a reason. It's called Game Pass.
If the three key points (price of the console, performance of multiplats, (timed) exclusive content for multiplats) are heading for virtual parity, then Game Pass will be an ace because it's gaming for cheap. The lack of game ownership won't be a concern because both PS and Xbox gamers have already been willing to give up their ownership rights as the evergrowing share of digital game sales proves.
To this day I have never bought a digital copy of a game. Im pretty sure there is a large percentage of the gaming market that like me are never planing to go digital. Some just dont trust it, some like resale. But this push for all digital that MS is aiming for could be a reason for people to skip xbox all toghether. Im willing to bet its more older gamers like myself who buy wide range of games but spend less per game. By that I mean loot boxes, cosmetics maps and all that other bullshit that "AAA" publishers try to shove down our throats.
Edit: correction, I did buy a digital game. Hellblade. But there was no physical version for it.
It takes genuine talent to see greatness in yourself despite your absence of genuine talent.