I work in critical infrastructure planning. My organization builds software in R, Python, and other programming languages customized for these major organizations. So many critical infrastructures, billions of dollars in planning, and just systems are built out of Excel. It's amazing. You'd assume something that services millions of people a day would have some more sophisticated and customized solution, but you're w…
Yeah it works and you don't need support contracts and then: - Fidelity's "Minus Sign Mistake": loss of $1.3 billion - TransAlta "Clerical Error": loss of $24 million - Fannie Mae "Honest mistake": loss of $1.3 billion Then you get employee turn over where new employees don't get "arcane" knowledge passed down by people who left and took their spreadsheet foo with them. Excel does not have "access control", "auditing…
Weigh that against makes $X Billion due to correct usage of Excel multiplied thousands and thousands of times over. Survivorship bias at it's finest.
Excel isn't perfect and has notable downsides, but work gets done all of the time on them for the aforementioned reasons.