We already saw through court documents that Pro-or-similar consoles are expected. The difference with Microsoft is if they stick to generations like they implied they wouldn't. You could get creative with you how you count Xbox consoles and say, "Here's the Xbox 6X and Xbox 6S", where 6 is a larger number than the PlayStation's 5, which we know is a strategy that works. Out of the gate, very few games would require that larger hardware, and unlike PlayStation, purchasing an Xbox game once gets you the upgraded version on new hardware. I imagined this is the direction they were headed in when this generation was designed, but 2020 sure did change the trajectory of all sorts of things even if I'm right. I also seriously doubt they're interested in leaving the console space given the acquisitions they've made in the past few years.
maybe enough generations of trailing marketshare
The 360/PS3 generation was extremely close, and they had the lead for most of it.