That's a very good reason. I perfectly understand not willing to learn yet another fancy tool that looks nice, but is unfinished, buggy and will probably be gone next year. Some people are too busy doing actual business to waste time on that.

The biggest benefit of Excel is its flexibility - you can do what you need, how you need, and you can adjust and readjust your sheets on the fly to match the changing and messy needs of doing business. That database you're trying to force those workers to use? It's probably designed wrong the moment you save the schema, because the needs changed.

So Excel is unsecure and people keep losing their spreadsheets by moving them between each other on flash drives? Solve that. Maybe with a Dropbox-like solution for syncing documents (no shiny webapp bullshit, no logging in to domain NAT Samba Kerberos Windows Briefcase Sharepoint nonsense, just "a folder that syncs" and enforces some security).

I have the feeling that a lot of problems between IT and non-tech workers stems from the former treating latter like morons instead of trying to help them to do their jobs efficiently.