And when the cheeseburgers run out, people will turn to drinking their pee and eating other people. I read somewhere that it takes 9 days of starvation before social groups turn on eachother.

On the one hand, it looks like big corporations have unlimited scope to drain resources without scrutiny, this leading us to struggle in society. Now, we don't want some supreme authority dictating who is allocated exactly how much resource allowed them, it's borderline dystopian. But is we look at the Asimovian universe, something would certainly have to be done technologically to solve this problem if we continue to grow in populous.

On the other hand, it always seems like there are those working to reduce population growth...One wonders if this is a desperate attempt to curb the population because they haven't got the power or the knowhow to prevent environmental issues such as water running dry from impacting production.

Or, and I stress this is the most likely, people are incompetent and greedy and don't give a shit about fixing the planet, so they continue to pump water into bottles for Nestle and to feed their stupid almond trees until there's nothing left.