Neither of these are serious barriers for entering the field. I would argue it's the continuously changing landscape of skills which necessitates continuous lea

Neither of these are serious barriers for entering the field. I would argue it's the continuously changing landscape of skills which necessitates continuous learning that creates an ebb and flow of supply in the field. If Java had their way and it was used everywhere for everything, and everyone started to master Java, sure all these fears that float around HN would be justified. But that's not reality.