(a) humans can continue to consume resources indefinitely (think Trump!) (or for that matter, think Clinton or Putin); and
(b) any existing or future conflict can be solved or prevented without substantial resource availability and redistribution.
I believe this paradigm is still dominant because of the mentality of high income populations which refuse to recognize their own contribution to the evolving global crisis. There is also insufficient co-operation among high income populations and also between high and low income populations.