A huge factor. I used ada for years and the fact everyone I worked with did hobby projects in other languages didn’t help it. And most of us liked Ada.

It had other warts the string handling wasn’t great, which was a huge problem. It was slow too in a time where that mattered more (we had c and ada in our code base.). I remember the concurrency not using the OSs so the one place we used it was a pain. HPUX had an amazing quasi real time extensions, so we just ran a bunch of processes.