I wish Wine worked well enough to use Excel. We are not talking about adding up numbers in a cell. Once you include macros, or a reference manager in Word, Wine is not good enough. The same can be said about propietary software, like autocad, or software used to control equipment. Also, good luck convincing a regular user to get familiar with wine.
WPS is great for simple files. Again, not good enough for complex files, especially if it is a corporate collaboration environment. I have lost count on the amount of ppt files that didn’t display well when it used WPS.
Every other year I try all the alternatives you mention, hoping they got better, and I always come back to use a dual boot or a virtual machine, which is not a thing your regular user wants to do.