Yea there's that business reason.Yea doesn't make sense for console manufacturers to drop support for those 150m+´users and expect them all to upgrade within a year.
For me dropping the 50m XO's isn't the issue.
It's that the 1X is a fraction of that and to support the 1X even if it wasn't mandated by MS that you can't do one without the other, by the time you put in the work to get it running on 1X you may as well release on the 1S.
As is currently the case, lower resolution and settings with bad framerates.
Same hdd, cpu , gpu arch, software stack, feature set.
Get it running on all XO's or none at all is the only option.
With a Lockhart there's no place for a 1X. Good console, better than the 1S but it just wouldn't fit in the lineup, price, power, features. Too expensive to replace the 1S, not competive with Lockhart.