> Interestingly enough, many games on PC standardized the WASD keys for moving, which might be seen as "left-handed".

To me, WASD for avatar movement makes sense even in the context of "right-handed bias" in that if a gamer is using a mouse, odds are they are right-handed and the mouse is positioned to the right of their keyboard.

And if a gamer is left handed, it's a minor inconvenience to shift the chair position such that their right hand manipulates WASD and their dominant left hand uses a mouse on the left side of their keyboard.

Of course, many modern games allow custom key bindings, so a left-handed gamer could use IJKL instead of WASD if they so chose.