As Indonesia's catastrophic wildfires choke the wider region yet again, the real culprit isn't the unusually prolonged dry weather but the corporate impunity and lax governance fueling the flames.

Indonesian authorities have arrested 72 people suspected of starting some of the forest and peatland fires as huge blazes in central and west Indonesia triggered choking haze.

With thousands of fire hotspots traced to corporate land, the president has vowed action – but past efforts to collect fines have failed.