Environmental restrictions are a huge barrier to entry.
Have you seen similar new brick and mortar industries be built within a couple years of ground breaking? Like oil refineries, paper mills etc, it is nearly impossible to get through the permitting process - and also costly to do so too. If you had a billion to invest, why tie up your capital for 8-10 years before you can drive a nail?
I’d be careful driving any nails (at least with a steel hammer)😎