This is one of the criticisms I'm trying to address because the concept that we can't share because we can't maximize everyone's personal desire I think is a phantom fear. Specifically, Humans (despite what Agent Smith said) have shown repeatedly that they can find local balance with their environments provided they do not overconsume, which is possible to not do.
At the root of this debate is the silly question about whether humans are fundamentally selfish or cooperative which is a false dilemma. Every piece of behavioral research indicates that we're "helpful" to each other and cooperate as the predominant behavioral feature (based on infant/toddler studies). Even if it didn't though, the idea that there's a fundamental flaw in humanity is literally just induced fear, there is no scientific basis for it.