Isn't that true for lots of software that's been driven down to zero cost, though? Like, say, TensorFlow? Given the business value of people who need to use TensorFlow, it "should" cost more than even IDA.

It feels like to stay in business with software like this, it has to be lucrative, but not too lucrative, or else FAANG companies (or occasionally governments, like in this case) will either gobble up or kill the market.