You lead with the idea that people in power have made a secret decision to do away with democracy and deploy totalitarianism. This is by definition a conspiracy. The rest of what you said, plus what you just said about departments of people already looking at this I find quite realistic.

Someone else just posted this 10 year old video on the geopolitics of climate change. I wanted to make sure you saw it.

https://www.youtube.com/watch?v=Mc_4Z1oiXhY

While I'd say it's more of a tacit agreement than a 'here's the plan which we've each signed our names to' type conspiracy, it seems entirely reasonable to conclude that those with power and resources fully intend to conserve it - indeed, I'd argue that this is what political conservatives are motivated by these days, as opposed to legacies or institutions. In past times of apparent infinite possibility it was reasonable to believe the notion of endless trans-generational growth that justified what Plato called the 'noble lie', but when there's a sense that the ship is sinking the rich have no compunction about pushing others out of the lifeboats because that's what they're used to doing.