You may see this as a dark cloud,  I don't.  They know their weakness and is solving it quickly.  In the news lately is deals china is making for oil,  shared drilling with cuba, brazil, india,   then they buy a drilling company...  Interesting,  They have the $ and the drive to change the paradigm very quickly..

If they can build a floor a day in the new city's they are building...  Multiple buildings..

I'm guessing they will have operational oil rigs in new places before 5 yrs.  (I think within 3)

The real question is can the US learn to be nimble?