An app I worked on once wanted a Google Sheets Integration - just a quick button to import rows from the database and into the spreadsheet so that the client can do some quick visualization and pie charts (I offered them a readonly DB account but they didn't know any SQL).
Few years have passed, and there are currently 470 THOUSAND rows with 20+ columns in that spreadsheet which is used almost daily.
Rewriting this into a proper web app would take maybe a week (the API is already there and used by GS), but was never deemed a priority, so it will keep existing in the backlog until we hit row or cell limits - after which it will suddenly become urgent...
Few years have passed, and there are currently 470 THOUSAND rows with 20+ columns in that spreadsheet which is used almost daily.
Rewriting this into a proper web app would take maybe a week (the API is already there and used by GS), but was never deemed a priority, so it will keep existing in the backlog until we hit row or cell limits - after which it will suddenly become urgent...