Why should we? 

I notice that you didn't mention the Alberta Orphan / Abandoned Well problem. Should we give the Oil and Gas industry credit for that "achievement"?

Oil and Gas companies would hand "ownership" down to a chain of ephemeral corporate entities, and "ownership" would often end up with a street person who would accept the supposed cleanup responsibility in return for enough cash to buy booze or drugs. That relates to the wording about "Defunct Companies" and "licensees that are deemed defaulting working interest participants" that shows up in official reports and in so many news stories.
 
The province didn't bother counting in the past, leaving farmers on their own to try and track down who should pay for cleaning up  their contaminated farmland.

http://www.orphanwell.ca/pg_defunct_company_list.html

http://calgaryherald.com/business/energy/inventory-of-abandoned-oil-and-gas-wells-doubles-in-2016

https://fuzeium.com/posts/how-many-orphan-oil-gas-wells-does-alberta-hav