Disagree with the premise. Excel is a great product because it's so flexible. The same product that financiers use to create valuation models can be used by you

Disagree with the premise. Excel is a great product because it's so flexible. The same product that financiers use to create valuation models can be used by your mum to create a grocery list, or your small business to create an invoice. A spreadsheet is a blank canvas which can be used to create pretty much anything, and doesn't force the user to use it for a single use case or in one specific way.