I’m in the industry, everyone here uses spreadsheets for everything. They only have us working on other stuff now because we’re reaching memory limits and row limits for calculations.

But primarily we have a few factors working in excels favor. 1. Inertia. 2. Difficulty in switching to a more advanced solution for non-technical folks. 3. Speed. If you can get a MVP up and running before another firm you have an advantage. Even if it’s in Excel and held together with spit and string.