I think you overestimate the quality of developer in the outside, "non-hacker-news" world. Labor is always the biggest outlay management worries about; if they don't have technical experience, there are tons of small to medium sized companies that will hire someone at 20$ or 30$ an hour with no degree to bang out bad GWT or jQuery.

In the enterprise ( or small enterprise ) world, when was the last time a web dev needed to write a bloom filter in Go?