Bt , if this is the case I have to wonder why the commercial distillers all seem to keep their washes at a lower abv's than the figures that you are Quoting?
Let's have a look at this across the board rather than a general one fits all.
Rum and especially sugar based Gin commercials who use primarily sugar(s), beets molasses or cane as wash bases are not restrained by grain mash efficiency. Hence you see some fairly high wash abv's produced. A vodka manufacturer especially if triple distilling would be more concerned with yield and hence would be a user of specialist yeast. less input greater yield = commercial viability.
For grain mash based agree there's little point in using more expensive high yielding yeasts when your SG due to grain mash efficiency is only going to give you lower yields. Grain mashes don't push into the SG 1090 plus range so why bother...commercial pressure dictates mash times therefore potential yield and the resulting yeast requirement.
It's further complicated by issues like American bourbon laws that restrict the final barrel max strength. It's far simpler to produce to the level you need that stuff about.
Commercial yeast manufacturers produce tons of these specialist yeasts...they sure ain't all going into the hobby market.
bt1
bt1