Actually there is one more possibility, that one or more goofballs in accounting just like to waste time "looking over the numbers and getting a feel for them". This generates lots of spurious questionably-motivated inquiries to business and IT people (who always blame the other party, when only accounting is to blame for their own vague feelings). In that case don't worry about fixing anything at the company, just get a different job somewhere else.
That said, there are some great cloud analytics offerings which are going to compete.
I live mostly in a land of Unix pipes and vim, but I get it. Excel is a low-abstraction (everything is visualized!) graphical programming environment that the business world loves.
Software development in large corporates is just too slow, costly and unreliable.
Drain those IT projects of risk, get moving early, with a structure that lets the user guide the data modelling... Could be a nice local minimum :)
Nowadays you have JS to automate Google and MS docs, but 1) Javascript is kinda warty for VBA-type users, 2) API driven javascript is less friendly than the locally-logical VBA-style access, and 3) the mental barriers to entry are much higher than older solutions to the same issues...
In theory we should be approaching data-nirvana for end users. In reality it takes a lot of tech know how to bridge those gaps in the modern Enterprise and you're getting almost no help from the big boys.
It's used very technically and often by people who don't view themselves as technically capable so the lock-in is enormous.
Not to mention that you can't do 1/4 of what Excel can do in sheets without writing a googleScript. Don't even try to open a 100 column 1,000,000 row spreadsheet (which are more common than most think) in Sheets.