Dario is definitely more grounded than Sam, I thought Anthropic would get crowded out between Google and the Chinese labs, but they might be able to carve out a decent niche as the business focused AI for people who are paranoid about China.
They didn't invest terminal agents really though, Aider was the pioneer there, they just made it more autonomous (Aider could do multiple turns with some config but it was designed to have a short leash since models weren't so capable when it was released).
I acknowledged the point about Aider being the first terminal agent in a different comment. I am equally surprised at how well Anthropic has done compared to rest of the pack (Mistral comes to mind, had a head start but seems to have lost its way.
They definitely have found a good product-market fit with white collar working professional. 4.5 Opus gets the best balance between smarts and speed.