> tldr; The problem people are having is figuring out input and output for domains other than image processing.

This and some of your other comments in this thread lead me to believe you are unaware of how DL is being used in NLP. I would argue real industry use of DL for NLP dwarfs that of DL for images. Personal assistants, search, customer service, sales, chat are the big general cases, let alone company-specific tasks (.e.g. financial data, reviews) or other NLP domains that are not particularly industry-adopted (.e.g. translation, summarization). There's a lot of demand for NLP DL experts, and it's no surprise this year that Socher's NLP DL class had 700 Stanford students enrolled.