Re implementing custom app with its business rules that was buried in excel sheet is a different thing. People don't want to buy excel in a browser, because they can have that already, they want their custom logic and in a way it works in excel.
Re implementing custom app with its business rules that was buried in excel sheet is a different thing. People don't want to buy excel in a browser, because they can have that already, they want their custom logic and in a way it works in excel.