The (any!) comparrison to photovoltaics is not acurate.Photovoltaics (PV) are primary energy producing infrastructure that produces its own fuel and is now verticly integrated into it's own supply chain, nothing other than life itself posseses this atribute. AI, is exceptionaly likely to work in exactly the opposite fashion and take its host out as it goes down.
When PVs got cheaper, more of them were sold.
PV had to prove that it was truely indispensable and also prove to have realistic prospects for improvement and volume production before investments were made, and then prices came down. AI has proven that it burns more money faster than anything else, ever. I will admit that I am an early adopter of solar, but an AI refusenic, but still there is no reasonable comparison of AI and anything outside of religion.