There is a tendency to regard the touch screen as the final and ultimate advantage of Windows 8. There are already hacks to show how to return to the more familiar Windows 7 screen. If businesses have the budget, they should look further ahead than the Touch facility. Windows 8, already, promises better performance.
Having said that. Imho most businesses are already achieving desired performance, probably overloaded with uneeded software on their networks, which won't go away with a new OS. Possibly, with Windows 7, updating for update sake, has come to the end of the line. With a worldwide economic plunge, which is forecast to go on for a long while, I doubt there will be a rush to purchase the new OS.