u/Narrow-Industry6839

I have a question about Generation IV breeder reactors, and I should note upfront that I'm not a STEM person—so I may be missing something obvious.
My thought is this: couldn't you connect a large breeder iv reactor to a mini desalination plant, use the water output for electrolysis to produce hydrogen, and then combine that hydrogen with captured CO₂ from the exhaust streams of steel mills, coal plants, or other industrial facilities? Note if this ever became unviable you could also do direct carbon capture from the atmosphere but at a currently untenable cost per barrel. Then use the “Fischer–Tropsch”process to synthesize sulfur-free liquid hydrocarbons that function as crude oil or refined fuels?
Suppose the entire system—reactor, desalination, electrolysis, carbon capture, and Fischer–Tropsch facilities—costs around $50 billion upfront and is amortized over 30 years. If the carbon feedstock is effectively free because it's captured waste emissions, and the reactor is producing something on the order of 10 GW of power, it seems like the break-even production cost might end up somewhere around $40–50 per barrel, depending on your financing cost, red tape and subsidies. Note you can also use the excess freshwater and oxygen to subsidize the cost per barrel.
My question is: what am I missing?
This seems almost too good to be true. You’re telling me that one could produce $40 carbon neutral break even oil for all of humanity for the next millennium?

I have a question about Generation IV breeder reactors, and I should note upfront that I'm not a STEM person—so I may be missing something obvious.
My thought is this: couldn't you connect a large breeder iv reactor to a mini desalination plant, use the water output for electrolysis to produce hydrogen, and then combine that hydrogen with captured CO₂ from the exhaust streams of steel mills, coal plants, or other industrial facilities? Note if this ever became unviable you could also do direct carbon capture from the atmosphere but at a currently untenable cost per barrel. Then use the “Fischer–Tropsch”process to synthesize sulfur-free liquid hydrocarbons that function as crude oil or refined fuels?
Suppose the entire system—reactor, desalination, electrolysis, carbon capture, and Fischer–Tropsch facilities—costs around $50 billion upfront and is amortized over 30 years. If the carbon feedstock is effectively free because it's captured waste emissions, and the reactor is producing something on the order of 10 GW of power, it seems like the break-even production cost might end up somewhere around $40–50 per barrel, depending on your financing cost, red tape and subsidies.
My question is: what am I missing?
This seems almost too good to be true. You’re telling me that one could produce $40 carbon neutral break even oil for all of humanity for the next millennium?