The generally accepted idea of Eucalyptus fires is that you need to manage the fuel load on the ground. Regular burning off, maintenance of fire trails, clearing undergrowth around populated areas etc. is really the only way to control a plant that uses fire as part of it's reproductive cycle. Ignoring it for 10 years inevitably sets up a literally deadly fuel load which will be completely uncontrollable if it starts burning.

I grew up in the Australian bush, and it, like the Californian Eucalypt forests, is prone to burn at the slightest provocation. Add dry, windy conditions and it's a recipe for disaster.