Actually love the analogy, but I'd like to add that it's not the fireproof house itself that you need to obtain; there is an additional requirement.

The Water Requirement: The fireproof house needs water to actually be resistant to fire; if you don't have water when the firestorm comes, you'll just burn up. Initially, fireproof houses generated only little demand for water because people were trying them out and fires were isolated. When the lakes were drying up, it didn't take long for people to build bigger and bigger dehumidifiers that sucked every water molecule out of the air.

Then, people started hoarding water and some even went as far as leveraging their stashes of water to borrow paper and then trade that paper for more water. After the paper traders held a big "Water 2025" conference in the desert, many became inspired with the success of one particular paper trader and currently there are many filings with the paper commission of those that wish to emulate the scheme. Note, there are also derivative designs that use inferior liquids to obtain fire resistance, but let's be real: Pepsi really is shitwater.

Many fireproof houses are stashed with paper. One of the main paper manufacturers which is also a water hoarder and operates a lot of dehumidifiers, builds fireproof houses out of paper, claiming these are superior. Everyone knows of course that paper isn't fireproof, but since paper is so prevalent, it is easier to forget that and just ignore water.

You don't need many water molecules at a time, just flow, but since everyone is very much focused on the water markets, especially the water/paper pair, hoarding instead of preventing fires, it is hard sometimes to convince people to get some water so that they can be prepared for the firestorm. It doesn't help that water doesn't catch fire, unlike paper.

Ultimately the reason why people stop using their water for fireproofing their houses is because the market says they can get so much paper for their water. Currently, the water distribution system isn't ready to for an extinction level firestorm and nearly everything will go up in flames if that were to happen today, which is undesirable. Therefore, all we can really do is plumb ourselves better piping and prepare not only us, but society as a whole for the inevitable.

PS: it may very well be that because of the constant dehumidifying, the risk of the firestorm increases because there is less water naturally occurring and therefore could speed up the timeline.