How does a company like Anduril come out of nowhere to scale so fast, get so much money, and so many contracts in a very entrenched field of government defense

How does a company like Anduril come out of nowhere to scale so fast, get so much money, and so many contracts in a very entrenched field of government defense contracts? Yes, they're bringing modern industry experience to these things, but I don't see that as enough to break through all the barriers that are there. How have they done it?