@darius From a enterprise software UX designer point of view I support this position 100% due to the simple fact that Excel is *the* competitor to any entreprise app and the most asked feature for any of them is "can it export to Excel?"
So many processes rely on some Excel sheet with formula that somebody made that spits out stats or kpi or generate dashboards.

One very strong point of Excel is that it's crazy easy to share your "program" with other people on company locked computers.