I think HN, as a largely technical audience, should see the clear problem with that query. Of course search engines certain results when you use terms like "big tech". It's a term that is largely used by conservative groups in criticism of the tech industry and for little else, and so the bias there is hardly surprising.

Like, say I drum up a conspiracy about how the government is putting Glupkleins in the water. Since it's not a real word, the only results that'll show up will be the conspiracy nonsense that I myself am peddling. People who "do their own research" on Glupkleins by punching it into a search engine will come away with the impression that the entire community is unified on whatever stance I want purely because nobody else knows or cares enough about it enough to write their own articles debunking it.

This is the same thing here, just at a murkier scale. Nobody uses the term big tech except in this context, and so using that term to find something which disproves the context around the term is a losing battle