You studied physics, obviously not energy physicssorry trickie -...

You studied physics, obviously not energy physics

sorry trickie - there IS no physics without energy !
what I studied was way way more than I need to understand this - this is hgih school physics
you saw what I posted 1.37 Kw /sq m
PER SQARE METRE - SO EVEN ONE SQUARE KM = 1,370,000 KW
Maybe enough to power 500,000 houses - that's plenty of density - Oz has an area of 7.6 million sq km
(realistically you wouldn't capture all of that energy - more like a quarter of it but still 125,000 houses )

wind can be off shore if you want

I really don't know how you dare argue with that , you are making assertions that you know nothing in the least about and are quite wrong (still)