Downvoted but correct. The oil pipeline was a matter of nation security though (a decent chunk of the northeast was effected) but you’re right within a week or two the government seized BTC accounts.
The pipeline worked fine, they just couldn't handle billing for the time being.
At that point you start to write on paper, if needed by hand, and backfill the system once it's back up.
If anything, their shutdown of the pipeline should be illegal/prosecuted, on the grounds of being limited in what you can do business wise if you're operating critical infrastructure.