This round of technology reminds me of when Google was the shiniest thing on the block, and everyone was trying to cram a site specific search engine into their website.

This resulted in open source projects such as Lucene, which is incredibly useful, but is not in reality anything like Google. Over time interest in these projects faded and now they're just another pretty optional component of a website (many sites just use SQL queries rather than a search engine).

I think chatbots are pretty similar. The premier versions of these things cost way too much to run to be practical for most sites, so they'll play with the scaled down, easier versions for a time before abandoning the functionality entirely over time unless it's found to be actually useful.