> The primary hurdles are legal, capacity, and financing. Incredibly hand-wavy. Finance is a way to allocate scarce resources - you can't claim the "technology

> The primary hurdles are legal, capacity, and financing. Incredibly hand-wavy. Finance is a way to allocate scarce resources - you can't claim the "technology" is solved if you haven't figured out a way to do it cost-effectively at scale. No such cost-effective technology yet exists for nitrogen fixation and steelmaking at scale, regardless of what small pilot projects might have been attempted thus far. "We solved the equations, now it's up to the eggheads to figure out how to finance it" is something only an incredibly naive engineer could possibly think.