While both the left and right mouse buttons do require a solid press, they're large and responsive all the way up to the apex of the mouse, and there's actually only a single spot (on the extreme upper-right-hand corner of the right mouse button) where it won't actuate if pressed down.
However, ownership of business among OBC's - an acronym for Other Backward Castes or the "middle castes" who "neither suffering the extreme social and economic discrimination of the Scheduled Castes, nor enjoying the social privileges of the upper castes" - has grown.