That caught my eye too, because VCs never poured "billions" into any one company pre-dot-com bust. Unicorns were notable for being
valued at $1B or more, but never
raised that much in funding, and this only happened much later, a decade and a half after Amazons IPO - Amazon itself was never a unicorn, its post-IPO capitalization was $300M.
Amazon is famous for making losses after being publicly listed. Also, it was remiss of grandparent to not note that Amazon's losses were intentional for the sake of growth. OpenAI has no such excuse: their losses are just so that they stay in the game; if they attempted to turn profitable today, they'd be insolvent within months.