Even if it's not useful for general-purpose compression, it may still be useful in a more restricted domain. In text compression, Brotli can be found in Chrome

Even if it's not useful for general-purpose compression, it may still be useful in a more restricted domain. In text compression, Brotli can be found in Chrome with a dictionary that is tuned for HTTP traffic. And in audio compression, LPCnet is a research codec that used Wavenet (neural nets for speech synthesis) to compress speech to 1.6kb/s (prior discussion from 2019 at https://news.ycombinator.com/item?id=19520194 https://news.ycombinator.com/item?id=19520194).