Alberta has an orphaned well program to cover this (more likely the drilling company no longer exists vs. "skipped town") but even with the forethought it still doesn't work.
The parent comment specifically talked about prepayment of cleanup costs - i.e. taking their money before it's drilled, so that when companies go bankrupt, there is already money set aside to do the cleanup. The Alberta system does not do this.
because the Jason Kenney & Danielle Smith (aka UCP leadership) decided to let the oil companies off the hook.