Pretty much every CRUD app I've ever written was to replace something that was already being done in Excel, and the reason was always to get more of one or more

Pretty much every CRUD app I've ever written was to replace something that was already being done in Excel, and the reason was always to get more of one or more things a RDBMS gives you. So I can say this from a knowing place: good freaking luck replacing Excel's other capabilities. 30 years of work by thousands of Microsoft devs is not easily replaced. It's like a moat around their business that they built by brute force.