All this talk of cost to the oilco is missing the point. It doesn't cost the oilco an extra bean that he cannot recover from the punter at the pump.
Exactly and that's what we have to keep in mind, constantly.
But the only way to make this universal is for the regulator to get involved because left up to the oilcos - well, you can make your own assumption on that.
The best thing that offshore workers can do is contact the CAA and ask them if they ever have a thought for the "Bears" and if they come back and say yes then invite them to come visit you for the day. During the day arrange for them to be dunked in a 332 fuselage with 18 people inside (in the dark), upside down and let them have a go at getting out.
Then, afterwards, over lunch sit down a talk to them about endorsing a proposal to rip out a few seats in the interest of passenger safety.
With a CAA directive in place the oilcos will readily conform.