No (sane) company's migration path from XP is going to be to an open-source clone of XP developed by a small team, that offers them no guarantees whether it works, no support, and the possibility that development could stop at any time.
If there are no other options, they will. And investors may be willing to fund a company that can keep XP apps running long-term.
No sane company is still using Windows XP, given that support ended 3 years ago and development ended a decade ago.
Still being used in POS equipment and ATMs.
"XP embedded" is still supported and updated, afaik.
If I can offer you cloud-based access to a Windows app you need that no longer runs on hardware you can purchase, you don't have to know crap about what OS I'm running.