Are AI companies realizing that they have already reached the end of road?

Could the slow down be just a cover up that LLM training costs are only rising with diminishing returns and AI companies have realized that there was never a point of going so much further in this direction? It feels like AI companies are scared that revealing the truth at this point will be catastrophic. It just feels like everyone wants to buy some time because going too fast will make them reach end of the road. Imagine Samsung had launched edgeless display much earlier? There would be nothing further to achieve back in 2015. So they decreased bezel size by 1mm every next release and people purchased for 10 years. Apple stopped playing the notch game just last year. Otherwise whats new in their hardware design? It feels like AI companies are already very close to full potential and next models will have nothing significant. So no more wow factors, no more 10-15% benchmark improvements and no more hype.