1. It's 10% of one year's GDP, i.e. e.g. 1% of GDP for 10 years.
2. NATO standards for defense spending are 2% of GDP.
Assuming it really is that cheap, cost is not a blocker.
I'm not sure what the latter number is, as I've heard claims that fossil fuels are subsided by anywhere from $1 to $5.9 trillion per year.
1. It's 10% of one year's GDP, i.e. e.g. 1% of GDP for 10 years.
2. NATO standards for defense spending are 2% of GDP.
Assuming it really is that cheap, cost is not a blocker.