It's interesting, people see EPIRBs and sat phones as expensive, and as such are often not part of the standard kit.
However lift kits, winches, mud tyres, fancy drawer systems, dual batteries, fridges, etc are all bolted on to just about every 4wd you see in th bush.
My Inmarsat wasn't that expensive after rebate.
Not that I'm suggesting that call for help should be step one. But I do see them as a must for remote travel.