The problem is that most software people use for work is going to be closed source because the vendor wants to make money on these juicy business contracts.

Linux makes a point of being very difficult to be used with closed source stuff, in kernel and userland alike (getting static compilation to work is an utter PITA), and that is a reason why commercial software written for Linux is rare, and that in turn is the dominant reason why Linux adoption on the workstation has been very slow for a very long time - until a lot of business applications shifted to the browser, making the client OS platform all but irrelevant.