If your business processes are based on that: yes. You may argue "adapt your processes" but that's not something that you do within a week. Besides that it's al

If your business processes are based on that: yes. You may argue "adapt your processes" but that's not something that you do within a week. Besides that it's also about exchanging information. Excel is a quasi-standard in some cases. Again you may argue "change that, its ridiculous". Still it's not something that you "just do".