Everyone is now rushing to sell oil, before demand for it will start falling rapidly.
It's actually helping to kill off oil investments because why bother if the prices stay below what is actually profitable. A lot of recent investments only made sense at 70$+ a barrel. Now that 30$ is on the table, those investments are effectively under water. The price volatility alone should scare investors. Imagine it drops another 10$ because Opec throws in the towel and unleashes the floodgates?
Meanwhile, oil dependence is being addressed by ongoing electrification so lower demand is going to keep prices low even as supply declines. This ensures that by the time the shit hits the fan (cheap supplies run out), it won't be as much of an issue. In 20 years when most transport is electric, the barrel price for oil will be much less relevant for most. There will still be a need for oil of course but not at the levels needed today.