Far better off for who? People constantly dismiss spreadsheets, but in many cases, they are more powerful, more easily used by the people who have the domain knowledge required to properly implement calculations or workflow, and are more or less universally accessible.
But it's very hard to have a large conventional cell-formula spreadsheet that is correct. The programming model / UI are closely coupled, so it's hard to see what's going on once your sheet is above some fairly low complexity. And many workplaces have monstrous sheets that run important things, curated lovingly (?) for many years. I bet many or most of them have significant errors.
I use Google Worksheets frequently to track new things that fit into lists/tables, and giving someone else editor access without them knowing a few worksheet nuances means I have to recheck and correct them every month or two.
I remember my apartment got a ~10% bump in value one year due to this flaw being fixed (fix didn't apply to all housing, just those who were on floors 5 or above).
I don't think though that a SaaS would have solved anything here.