I worked for one of the largest financials services companies in the world and they STILL use excel to drive their trading activities. They are so large and so complex that it's impossible to convert them because no one completely understands how it all works. They were developed by traders/market experts with no help from IT, for years IT didn't even knew they existed.
These spreadsheets are truly amazing, I've only seen glimpses of these spreadsheets but they were massive, nothing like needed to have servers in the local network cabinet and running cables for keyboard, video and mouse, because you needed 1/2 a Tb of ram in order to open the spreadsheet.
These spreadsheets are truly amazing, I've only seen glimpses of these spreadsheets but they were massive, nothing like needed to have servers in the local network cabinet and running cables for keyboard, video and mouse, because you needed 1/2 a Tb of ram in order to open the spreadsheet.