Yours in that from it follows, that there's still quite a bit of room to get ahead of OpenAI for smaller players.
Parent's in that in order to achieve above one can just leverage the public papers produced by bigger research labs.
I have the feeling that smaller players are about as likely to get past GPT-n family in the next 2-3 years as I am to turn a Farnsworth Fusor into a useful power source.
Major technical challenges that might be solvable by a lone wolf, in the former case to reduce the data/training requirements and in the latter to stop ions wastefully hitting a grid.
But in 10 years the costs should be down about 99%, which turns the AI training costs from "major investment by mega corp or super-rich" into "lottery winner might buy one".