And most people at work still need a PC and need to run SAP, Dynaics, JD Edwards etc. plus MS Office.
"most people at work" need to run SAP, etc? Across all industries? Not in my experience. In fact, I'd be willing to bet that the majority of business-owned PCs are not running SAP, or most of the other packages you listed. MS Office, yes, probably, because the damn thing is nearly unavoidable.