Looks like a case of going with a supplier that best meets their needs

 France's rage over Australia choosing the US over France to supply some attack submarines has receive abundant coverage. France has recalled its US ambassador. It's caused difficulties with France's relations with Britain as well.

But according to the Australians, it came down to a question of how to best meet their security needs:

France would have known Australia had “deep and grave concerns” that a submarine fleet the French were building would not meet Australian needs, Prime Minister Scott Morrison said Sunday after the contract's cancellation set off a diplomatic crisis.

France accused Australia of concealing its intentions to back out of the 90 billion Australian dollar ($66 billion) contract for French majority state-owned Naval Group to build 12 conventional diesel-electric submarines.

President Joe Biden revealed last week a new alliance including Australia and Britain that would deliver an Australian fleet of at least eight nuclear-powered submarines.

Morrison blamed the switch on a deteriorating strategic environment in the Indo-Pacific. He has not specifically referred to China’s massive military buildup, which has gained pace in recent years.

“The capability that the Attack class submarines were going to provide was not what Australia needed to protect our sovereign interests,” Morrison said.

“They would have had every reason to know that we have deep and grave concerns that the capability being delivered by the Attack class submarine was not going to meet our strategic interests and we have made very clear that we would be making a decision based on our strategic national interest,” he added, referring to the French government.

France responded to the contract cancellation, which Morrison has said will cost his government at least AU$2.4 billion ($1.7 billion), by recalling its ambassadors from Australia and the United States.

French Foreign Minister Jean-Yves Le Drian on Saturday denounced what he called the “duplicity, disdain and lies” surrounding the sudden end of the contract and said France was now questioning the strength of the alliance.

The fact that the switch results in lost opportunity for many French businesses just doesn't stack up against these concerns, from Australia's perspective. It would be a shame if a major rift in the Western world came down to a mater of protectionism.