I worked at 8 different companies as a contractor, so hopefully my sample size is big enough to be meaningful. I'd say it's 50-50. The companies that don't, usually know that they should but they need a little help. Companies that don't do it and they think they don't need it, are becoming more and more rare (fortunately).
Stick with it. If you're a junior, don't go evangelizing automated testing because it will fall on deaf ears until you're a little more experienced. Keep practicing and offer to set things up if they haven't already.