You think machine learning has only been around for 5 years? It has been around for 76 years, since 1950. The first pattern matching chatbot was Eliza, created in 1966. Shannon-style next-word statistical model chatbots were created in the 1980s. The first neural models were created 26 years ago. Large language models have been around for 10 years.

This technology is not new and has been around since well before the internet.