Why not? Problem is we’re incredibly wasteful, inefficient and the benefits are unequally distributed. There’s nothing physically limiting us from doing so with better tech and much better policies and governance.
Yes, there is. The human brain is a rather primitive hunter gather apparatus, that resorts to brutal aggression & societal decomplexification the moment the endless surplus ends. Hoping that better tech saves one from this, is like believing that going all in with higher risk, will save one from bankruptcy due to gambling.