Because what they did is kinda trivial. Its basically like the Dropbox comment really[0], except here you don't need petabytes of storage and infinite VC pockets.

After chatgpt everything in AI mostly became LLMs and building wrappers around them. It's like people forgot how to do ML.

To those of us who actually trained models back in the day, its kind of cute to see people wowed by a classifier. Yes, this is 0 shot and doesn't need training (most people wanting this would've used structured output, this is cool because it's cheaper and faster). But anyone with basic ML knowledge could've built this in a few hours.

The question is mostly why wasn't this productized. And it's interesting indeed that it took this long to become a finished product.

[0] https://news.ycombinator.com/item?id=9224