Climate engineering is pretty risky, and in the current stage, so small scale, by the time we are able to actually do something it will be too late.
And relying on just investments and market also wont get us there fast enough.
Nuclear is definitely part of the solution, but also much more targeted regulations that outright limit fossil fuels, and initiatives that reduce/ban cars, rewild massive swats of nature, massively scaling down overproduction of goods, and also pushing for reduced consumption in the global north.