"Cross platform". If cross platform means "pretty much installed on all company" then sure, but if it means ubiquitous among all platforms, then decidedly know. Excel is a huge piece of software, and it will probably never be cross platform, simply because it would take longer to port than the lifespan of the platform you were to port it to.
You're correct in saying that Excel is not cross-platform, but I'm referring to my application that lives on top of Excel. If the user is running Excel 16.0 64Bit, my app can run on Windows or Mac... does that not make it cross-platform?
