You can check out my melodies project from a year ago as a current example. There is nothing matching it yet: https://www.youtube.com/playlist?list=PLoCzMRqh5SkFPG0-RIAR8.... And that's just my personal project.
What you're saying about companies recognizing the commercial potential is clearly wrong. It's six years later and Siri, Alexa, and Google Home are still nearly as dumb as they were back then. Microsoft is only now working on adding a writing assistant to Word, and that's thanks to OpenAI. Why do you think Google had to have "code red" if they saw the potential? Low-budget startups are also very slow - they should've had their products out when the GPT-3 API was published, not now.
One thing I didn't expect is how well this same approach would work for code. I haven't even tried to do it.
And I'm sorry, but you're completely wrong about companies recognizing commercial potential. I worked on Alexa for five years, it is a far harder problem than you think. It is nowhere near as simple as "we just weren't looking at the right NN architecture or optimizer!" You're acting like it was a novel idea to think LMs would be extremely useful if the performance was better (in 2017). I'm just trying to tell you that isn't the case.
If any of the FAANG companies recognized the commercial potential and still accomplished so little, they must be entirely incompetent. When this 2017 deck was created, I had 50k LOC (fewer would be needed now using the frameworks and libraries) plus Word and Chrome plugins. The inference was still too slow and not quite feature-complete, and it was just a writing assistant with several other features in early testing, but it seems more than enough for me to know quite well how difficult is the task.