Chatbots are only becoming more popular... it's still a young industry. If you were starting a business and you really wanted to name your company chatbot.co, then paying up to $1K for it as an end-user would be a safe bet (although I am not familiar with .co names at all)
Of course you would lose a ton of traffic and mindshare to chatbot.com, which looks like an already thriving business.
So that said, I'd look at a different name