Read was all encompassing, I.e. how do you learn/keep up? If one doesn’t, one’s value diminishes. Simple as that. Experimentation coupled with reading is common among SEs. It’s not the company’s responsibility to keep them current. The problem I saw emerging over the last decade or so of my career, was a proliferation of individuals that wanted the money, but didn’t want to put in the effort. And that situation only worsened as they gained more tenure. Couple that with new grads or boot camp graduates, all wanting to start somewhere around 6 figures, and the industry has an issue. Hence, many companies have turned to outsourcing.