A large segment in this article (which is great overall) focuses on this decision. The short summary is "hiring Ada developers was hard and middleware and tooling were difficult to acquire."
While I've moved through a lot of parts of the software industry and may just be out of touch, I actually feel that this may be less the case today. I've seen a lot of school programs focus less on specific languages and frameworks and more on fundamental concepts, and with more "esoteric" languages becoming popular in the mainstream, I actually think hiring Ada developers would be a lot easier today (plus, big industry players like NVIDIA are back to using Ada since AdaCore have been so effective at pushing SPARK, which probably helps too).
A large segment in this article (which is great overall) focuses on this decision. The short summary is "hiring Ada developers was hard and middleware and tooling were difficult to acquire."
While I've moved through a lot of parts of the software industry and may just be out of touch, I actually feel that this may be less the case today. I've seen a lot of school programs focus less on specific languages and frameworks and more on fundamental concepts, and with more "esoteric" languages becoming popular in the mainstream, I actually think hiring Ada developers would be a lot easier today (plus, big industry players like NVIDIA are back to using Ada since AdaCore have been so effective at pushing SPARK, which probably helps too).