Easy Grip Lamp Switch

I don't understand why this isn't the default style of switch on lamps.

"The large three–spoked knob (above) replaces smaller lamp knobs, making them easier to turn on and off."

Awfully expensive, though: $9 apiece here.

Come on, crack research team: earn your keep.

[Three hours later]

Excellent work.

The one below

does exactly the same thing, fits easily over most lamp switches and therefore won't require you to remove the existing switch.

$9.98 will buy you not one, not two, not three but four of these ergonomically–designed switches right here.