The question is whether it will return to what it once was.

The big tech companies are monopolies, no longer afraid that they have to employ "all the engineers" to prevent competition. ZIRP isn't there to give rise to startups, or to give the tech companies unlimited leeway in development.

If interest rates drop or big tech is broken up, we might see a sharp rise in salaries. But now there's also more competition from overseas, both in terms of great talent and competition from large international players.

edit: the article was from 2016, and can confirm. I was making bank then and getting free at-work massages, boba, and towel service.