It won't change as long as people accept, & show up for, what is on offer. Flightglobal has 20 ads a day, every day, for India. The impression one gets is that they cannot get/retain people.
The local astronaut medical probably accounts for a few, but I would wager that a roster of 8 wks on 2 wks off, or 10 on 3 off, is possibly the major detriment that they so far choose not to address.
Not so long ago it was 6/2 but they obviously thought they could push harder.
20 years ago contracts like this could be 1mth on1mth off, try finding that nowadays, apart from Arik (who pay months late & only recently changed from 2/1 to 1/1) & Zimex.
Normal stay home folk sell 40 hrs of their life a week, home based pilot sometimes more, but these nomadic contracts are a p1sstake.
Even if you don't work every hour of every day you are gone, you are nonetheless selling them 6 wks/ 8 weeks of YOUR LIFE ! stuck somewhere you probably certainly don't want to be, for no more money than someone working from home.
We are absolute mugs , that we have allowed these contracts to deteriorate to such an extent, only ourselves to blame.