Fact is, if you aren't in the central bell curve, then you aren't a profitable sector. Everything is tailored to the average these days in order to have the largest potential pool of customers from which to extract profit. If only one out of every ten people is tall enough to have problems with "regular sized" objects then that means only one out of every ten people are potential customers for your Big&Tall products. 99% of companies will elect to target the other 9/10 instead, even in a saturated market.