Really the only 100% in-house products are Search and Gmail. The rest was bolted on piecemeal into the Borg: maps, android, double click, docs, YouTube, etc. - all acquired.
That’s not a bad thing, Google is really a story about a shrewd - even brilliant - acquisition and integration strategy.
However, they have systemically failed to grow new things in-house - be it space balloon internet, being an ISP, games network, etc etc.
They are likely better off just buying Anthropic at this point.