It seems to me that the main reason for these new non-standard document formats pptx, docx - etc. is to force people in using a new document editing tools. The use of these tools will in turn hopefully force people to use a new operating system. This in turn may force people to upgrade their HW. All these changes will require more services i.e. installation, integration and training.
Now I know why the vendors of the document editing tools, operating systems, HW and services think this is an excellent idea. I just can't for the life of me fathom what why businesses fall for it.
No one has been able to explain to me with any conviction the benefit (e.g. the return), but everyone is aware of cost (investment). So how the ROI work exactly? So why do people do it?
I am constantly reminded of a Dilbert cartoon I saw long ago.
• Dilbert: I have to turn this fifty-page proposal into a one-paragraph executive summary for our CEO.- It's impossible.
• Dogbert: Simple. - How about "Give us three million dollars so we can buy cool technology, pump up our resumes and escape this festering boil you call a company
• Dilbert: I feel obligated to say something about our customers.
• Dogbert: How about "I'm glad I'm not one of them.
We can't blame the vendors. There job is to sell things (vend) hence the name.