At least in the U.S., no one even comes close.
The Forest Service oversees 193 million acres with a wildland fire management budget of about $2 billion. That’s $10.36/acre.
The Department of Interior manages 500 million acres with a wildland fire budget of $856 million. That’s $1.71/acre.
By the way, DOI enjoys a 98% initial attack success rate (defined as % of fires kept smaller than 300 acres) — same as the Forest Service.