Are we heading to the (distant) future where to make progress in any field you have to spend big $$$ to train a model?
We are already there. Machine learning is the flavor of A.I. that keeps business barriers of entry high. If we had invested in symbolic A.I., things would be different. A similar thing happens with programming language flavors. PHP lowers barriers of entry so it is discredited by the incumbents.
"I'm not a real programmer. I throw together things until it works then I move on. The real programmers will say Yeah it works but you're leaking memory everywhere. Perhaps we should fix that. I'll just restart Apache every 10 requests." -Rasmus Lerdorf
"I was really, really bad at writing parsers. I still am really bad at writing parsers." -Rasmus Lerdorf
"We have things like protected properties. We have abstract methods. We have all this stuff that your computer science teacher told you you should be using. I don't care about this crap at all." -Rasmus Lerdorf