I think the author is experiencing and commenting on the challenge of building business apps for mobile in general - not just Windows/WinRT. WinRT suffers from

I think the author is experiencing and commenting on the challenge of building business apps for mobile in general - not just Windows/WinRT. WinRT suffers from the same limitations as iOS and Android when it comes to servicing business' needs. The good news is that WFP is going to be supported and improved upon (despite what the author says) until WinRT is a viable alternative. In the future I can see a small business owner linking all his computers together with a master Microsoft account and then buying a POS app that's downloaded to all of his computers linked under that account. If that can be done, it'd be a major leap from where we're at right now.