IMO we are currently in the ENIAC era of LLMs. Perhaps there will be a brief moment where things get worse, but long term the cost of these things will go way down.
Or we are in the early Netflix era where profit wasn’t as important as customer growth.
Cost will probably go down but nobody knows when or how. It might take 10 years for all we know as training costs have only been rising.
A huge difference is early computers were not subsidized. It took decades until most people could afford to own a computer at home.