Are you kidding? ReactOS is *only* 10-12 years away from functional Win-XP compatibility...
Of course, ROS should have gotten a group of corporations to throw moey and resources behind it back in 2011, about the time they seriously started considering the impending EOL for XP. For a fraction of what they're going to spend migrating to MSW7, 8.x or (ugh) W10, they could have had a usable drop-in replacement that THEY could exert control on. But the MBAs running companies these days are brain-dead.
Then again, isn't saying "MBA" and "brain-dead" redundant anyway?