I think you need to realize that as of yet the FEMA can't "Beam" the resources where they are needed Star Trek style...yet
Yeah, I guess those tanker water drop planes that are in Colorado and other states take 48 hours to get to California. A quick comminucations saying 'Fires are out of Control - can we send them now' would of helped. Quite a number of houses would of been saved.
What we see here is different than what people see around the world. In Los Angeles, the local news channels concentrate on the Santa Clarita fires, the Malibu fires, the Aqua Dulce fire, the Piru fire, the Stevenson Ranch fires.
In San Diego, the local news concentrates on the Witch fire, the Harris fire, the Fallbrook fire, etc.
In Orange County, same thing.
Local resources were diverted, and not enough was around.
Some smaller fires that burned houses didnt get the water drops that were used in other fires. Hence, more resources were needed when the time was right.