The business context for a rent versus buy dichotomy was first introduced to me by Adam a few years back. It has since then proven very useful as a tool for thinking about the relationship people have to their jobs/companies.
In this post, Cate Huston does an excellent job laying it all out, including which things are generally rented, and which things are generally bought.
Thinking about career decisions this way, you can consider different tradeoffs and options that work best for you at any given time… My question is: are you making those choices mindfully? And do they work for the life and career you want?