My bet: if it really becomes clear what capabilities an AI accelerator chip needs and lots of people want to run (or even train) AIs on their own computers, AI accelerators will appear at the market. This is how capitalism typically works.
My further bet: these AI accelerators will initially come from China.
Just look at the history of Bitcoin: initially the blocks were mined on CPUs, but then the miners switched to GPUs and "everybody" was complaining about increasing GPU prices because of all the Bitcoin mining. At some moment, Bitcoin mining ASICs appeared from China and after those spread, GPUs were not attractive anymore for Bitcoin mining (of course the cryptocurrency fans who bought the GPUs for mining attempted to use their investment for mining other cryptocurrencies).