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Knowledge Graph + automated transcriptions of almost every YouTube video = giant untapped moat of data

It's not exactly untapped, my AI company has scraped YouTube transcripts for 3 years now for RAG

Yeah and I've used this site for years when trying to recall a lecture I watched but only remember bits of

(it lets you search youtube by transcripts)

That's true, I meant more by Google themselves. It's their first-party data, the whole set available on-demand, no scraping needed.