@Vincenzo -- one of the ways that Microsoft managed to "speed up" inputting commands through a mouse in Windows was by adding the left key on a two-button mouse so that contextual menus can be used and common functions can be pulled up quickly that way. That is a different scheme than what Apple uses with its one button mouse setup in Mac OS.
Still, only so many commands can be loaded into a contextual menu, meaning the control key is often the fastest way to get tasks done even on a Windows system.
And, no, Linux users -- I haven't forgotten about you. The "two button" mouse scheme was also replicated in that operating system.