"Having worked for years in Europe with Cat 3C approval flying in extreme conditions became a normal days work during winter."
"Indeed. But you have actually highlighted the point. Because those extreme conditions are not the norm here, it would be an inefficient use of funds to install and maintain that kind of kit at every capital city."
Aircraft fires are not common in Australia either but we justify the huge cost of funds to install and maintain airport fire services at major airports.
I would think that if this incident had ended in loss of life the equation of efficient use of funds to install CAT III at capital cities may have been revised.