The other way experience helps is that you don't really need to interview at unknown places if you want to work somewhere. Over time, you've built up a professi

The other way experience helps is that you don't really need to interview at unknown places if you want to work somewhere. Over time, you've built up a professional network, and you can generally switch jobs via that network, instead of walking in the front door. Having a deep specialty in something allows you to work with other such specialists.