Ada is awesome! One of the greatest languages. Should be much more popular.
Still, not all languages can assert having 7 commercial vendors in business, lasting 40 years and counting.
(but perhaps the earlier stuff wasn't practical: "Early Ada compilers struggled to implement the large, complex language, and both compile-time and run-time performance tended to be slow and tools primitive" ... "By the late 1980s and early 1990s, Ada compilers had improved in performance")