Why exotic stylus not used on MM?

Let me explain
Of course there are exceptions
The top mm of the Ortofon is a shibata stylus
Nagaoka's Fine Line
Audio-Technica's Fine line
Exotic stylus micro line in third place in AT
(while expected to be in first place)
Micro line, micro ridge, fritz gyger, etc.. They are both absent and they are not at the top as expected

seems like there is a definition issue on 'exotic'

İmho

Old conic an elliptyc

Then Fine line and last shibata

and then exotics are

Micro line, micro ridge, fritz gyger, SAS, ortofon replicant 100, etc.. 

ATN140C stylus is exotic. and ATC140 is the sleeper MM cartridge 

I'm no expert but the design of the cantilever of a MM verses a MC might incur some design differences of the stylus...or it's just a marketing ploy. Not sure which.