Ask HN: Disrupting established industries with LLM-based products?

I'm gathering data points and doing research for an upcoming social media post on my personal social media.

I'm mainly collecting disruption stories where a startup launched a product based on large language models, became a success story and is now eating an established company's lunch money.

So please share your disruption story.

Disclaimer: I happen to work for one of the "IBMs" in one of these heavily disrupted legacy industries - which only adds to my curiosity.