That’s the point, why spend a week on some fancy web app if excel is already there?
I've seen it countless times. Somebody sends an excel file over e-mail and it is either an old outdated version of the file, or the persons that receives it hangs on to it for months as a source of reference.
MS Access is much better for allowing simultaneous editing, especially (IIRC) if it's backed by an RDBMS, since it will use row level locks.
My previous employer had several databases with read-only web interfaces, but Access editing interfaces. They're very fast to develop, and support all the usual database features (constraints, keys, search etc), and could be set to load a form-editing view by default.