Thank you for your comment. I'm really looking for a more extensive overview, an extensively motivated educated guess.

For example, catching CO2 might be done much more cheaply when burning CH4 at a power station. This might change the equation or not. There also seems to be quite a bit of evolution in reducing the price of carbon capture. [0][1] I seem goals of $30/ton for carbon capture and wonder what factors will change the equation...

[0] https://www.pnnl.gov/news-media/cheaper-carbon-capture-way

[1] https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10....