There are things you can't do - even as a society - when the costs start ballooning beyond the GDP of smaller European nations. I mean, yes, in an emergency you could cancel all social security and public infrastructure spending and instead dump it into AI. But even then it will take several big nations to foot the bill if you want to still have a country left after you're done. With the level of political heckle everywhere, this is just not going to happen, because it would need unanimous support from all sides.