
This is how AI dies: one company monopolises the technology and coasts on the results until the patents run out, aggressively using its patent portfolio and market share to prevent competitors getting a stronghold.
Finally, in 20 years time, people remember there was a fad for AI chatbots and that they haven't really developed since then, but now the patents have run out. And someone will dig them up and the cycle of reincarnation begins again.
(You think I jest? Look up what happened to drones, or the rotary engine, both of them stalled because of patents. And yes I know rotary engines aren't really a hot topic these days but people are researching them again.)