Girls call me Makaluod
I beg to differ on your 99.9%. About a third (and growing) of traditional wet shavers on B&B regularly shave with a straight razor. Then there are the SE "safety" razor shavers to further reduce your stated percentage.Anyone is still entitled to his opinions, but there's a reason if DE blades still command like 99,9% of market share in wet shaving, after one-hundred-and-twenty years. There's no need to reinvent blades just like there's no need to reinvent spaghetti.
I better guess at DE shavers would be about 50%.