I see. I guess I simply think that Softbank isn't a good indicator for that. To me, they don't seem better than any other investment company that puts their money into technology stocks with a growth narrative. For example, they invested in WeWork and FTX.
They don't know the future, just like the rest of us.
If we're talking indicators, if 5 Softbanks would do it in rapid succession one after another it just mentions to me that the "smart money" is showing signs of moving out.
In terms of whether AI will or will not fuel growth, I think it will fuel growth. Self-driving cars seems to be a solved problem for cities at least fairly soon (e.g. Waymo, anti-example: Tesla, camera's is not the way).
It's a question whether LLMs state of the art models will grow more, but what hasn't been done that well yet is integrating it into current software. I know, because in part, that's my job. There's still a huge productivity unlock there, also in ways that people can't fully imagine.
Right now, LLMs seem to be an enabler for software engineers, especially software engineers on smaller projects (I can't find the research at the moment, it was a while ago that I read it). It seems to be an enabler for many people, but they do need to put time into prompting it in a way that works for them.
Fixing the context window issues and others I think will be really hard tasks, because I suspect we then need to know what goes on inside the black box.
If an LLM could continuously learn, so somehow continuously keep updating its weights such that it learns better, that would be a breakthrough.