India's chief problem is overpopulation. There are simply too many people to provide water to. The country needs an urgent population program encouraging poorer families to have one or zero children. The same things are working in Bangladesh.
The only issues are in engineering and government to ensure citizens are actually provided what they need, which in this case is limited by decades of corruption and poor decision making. India is more than capable of handling the issue, it just needs better leadership to cast off some of the anchors it has been carrying for far too long.
The overcrowded cesspits that we whimsically call 'cities' in India are founts for all kinds of shit like the water table drying up, widespread water-borne and air-pollution diseases, anti-microbial resistance, shitty healthcare in overworked hospitals in general etc. These things are ALL made orders of magnitude worse to deal with just because our population is through the roof.
Not to mention the "smaller" quality of life factors. Enjoyable walk in nature? Hah! It's impossible to walk for even two minutes in Delhi and not see another person. Never-do-wells loiter the streets all day. No possibility of orderly queuing, just this huge, irritating, wearisome crowd wherever you look and wherever you turn. The metro. The park. The roads. The neighbourhood. Even the fucking hill stations that you seek to escape to. No solitude.
In an ideal world, these thing may manageable while still fostering a large population. But an ideal world this isn't.
> "...more than enough space and resources for everyone"
That's going to be a hell-to-the-no from me dawg. I hate the fact that we fucking breed like Rabbits.
The earth is a gigantic place. Every single human would fit into a cubic mile. The amount of freshwater that every single living creature drinks is only a sphere of a few miles in diameter, which itself is less than 1% of the freshwater on the planet.
The capabilities are vast, we are not limited by numbers but only by the weaker parts of human nature.
Sure, wave a wand, and POOF! No more greenhouse gases. Wave a wand, and POOF! No more single-use plastics. Wave a wand, and POOF! No more dead bodies in the Ganga.
That's not the world we inhabit. The world we inhabit moves at a glacial pace, and I sincerely doubt India moves at ALL.
The fact that humans can all fit into a small cube says nothing. Or at least, says far less than the fact that in India, the cities are in squalor and resemble garbage dumps much more than they resemble thriving metropolises. And that's NOT hyperbole.
What, exactly, has improved in our cities that leads you to your optimism? The fact that Delhi is the least polluted city in the world? Oh, wait. Or does your heart glow with joy while taking long walks along the banks of the Ganga, breathing in the smells of nature?
Hypothetically, anything can be done. In reality, the only part of your argument that matters is the rather poignant last statement. Optimism is for other people. A large order of deep-fried cynicism for me please.
I'm not sure what argument you're trying to make but optimism has nothing to do with the discussion.