Today I did my first advanced spreadsheet on LibreOffice after switching to Linux, and it handled itself pretty well. I had to search for some features on the web at first, but after I got it down, I felt comfortable using it. Also, LibreOffice’s default menu layout is not pretty, but I can find all of the functions with just a click, unlike MS Office’s ribbon menu where I had to click around to find what I was looking for. Sorry for bad English.
“No enterprise support” is actually scary for them. I did security, 'way back, but in Unix, and maybe that’s why we were more cool with OSS back then. Windows people love the black-box binaries and fear a lack of pricy support.