Ask yourself why the majority of viewers of this thread don't have central heating, or double glazing in their homes. Its simply because for most of the year it's not needed.
Except they are willing to cop the economic cost of not having those items. Ill bet if electricity prices were to become exorbinately high then double glazing, personal generators/battery systems will become the norm.
The problem at the moment is that unlike your house there is no economic cost to airports in providing woeful aviation facilities.
IF Brisbane airport had to pay the full economic cost of the fog last night a CAT III system would have been built years ago.
It would make for an interesting study for someone to figure out the true economic cost to Airlines from over the world the lack of Aviation infrastructure in this country. I would also include the lack of viable alternates in that as well.
Melbourne Airport were the only ones to proactively build low visability facilities, SYD and PER were embarrassed and/or pressured into it