If you read this article, note (1) there are systems in place in Alberta to prevent “dumping” of oil & gas (closure cost) liability on citizens; (2) it doesn’t cover all liabilities; and (3) there is pressure on Alberta to be more like “citizen pay” in the USA.

https://www.propublica.org/article/oil-orphan-wells-cleanup-playbook-siana-tom-ragsdale