Which bits are and aren't sustainable depends mostly on tech.
10x solar power and we get meet all current electricity demand in a climate friendly way; 10x lithium etc. mining and we can roll out electric vehicles much faster; 10x bioreactors makes… well, very little difference to ethical eco-meat, but mainly because it's still new and the kinks have yet to be worked out, but the principal still applies.
(Unfortunately, my point would still stand even if higher production only sped up disaster; the tragedy of the commons is because everyone is motivated to consume more than is sustainable given the size of the group).
10x solar power and we get meet all current electricity demand in a climate friendly way; 10x lithium etc. mining and we can roll out electric vehicles much faster; 10x bioreactors makes… well, very little difference to ethical eco-meat, but mainly because it's still new and the kinks have yet to be worked out, but the principal still applies.
(Unfortunately, my point would still stand even if higher production only sped up disaster; the tragedy of the commons is because everyone is motivated to consume more than is sustainable given the size of the group).