I doubt any retro fits or prevention to the houses there, many built long before this was as serious an issue, would sustain what is happening now (historic levels). Even full on concrete bunkers unless they don't have windows maybe... Just look at where it has hit areas with Pueblo Revival/Santa Fe style buildings (or whatever they call them in Cali, Spanish Revival I think), they are gutted and they should be pretty resistant to external fire. Wealth or not it is devastating to lose a home to fire.
But what is the logic, say turned back to Canada, Fort Mac had it coming? Should have known better, made heir own bed.... They make enough money in oil, suck it up...??? Idiots for building with those material... Not what I think.
This is a climate problem added with cutbacks on grid, forest management, etc. The very faint silver lining, it will take decades for the trees to grow back so the fire risk in this specific spot should be pretty low for the near future. Rebuilding in areas of forest fires is different than say a flood plain as the disaster changed the future risk factors.