I agree that the world basically runs on excel, but given that, the world cares about excel’s performance. Especially as spreadsheets are only getting bigger.
Office for Mac is a non-starter for power users due to the lack of Alt-key accelerators. There are countless other missing features, but that alone is enough to never make the switch
Interesting that you state there are missing features.
I remember a speech given by one of the leaders of Mac development at Microsoft saying that new features are tested out on the Mac first, and if they work out, they're brought into the Windows version.
The problem is that Alt-key accelerators are encouraged by Windows across the entire OS and it has been the case since the very first version of Excel (it really predates Excel)
I love the approach of testing new features on the Mac first, but it isn't sufficient since the Mac version was never updated to be 100% parity with the Windows version, which means some of the preexisting features would forever be missing from the Mac