I have not weighed in because you have answered this yourself (correctly) several times on these forums. I can only add that we had your kind of drought last year and it was miserable. Of course the casualties taken made aerating and seed both more important but nothing sensible could be done with unirrigated turf until the weather broke. Fortunately we had great growing conditions in Fall with good recovery possible for those who timed things well (or were just persistent).
Sometimes profit margins have to take a back seat to what works and is needed.
I believe some of the deep tine/core equipment could still work but that is not practical for lawns. Things will turn around. All you can do is be ready.