Making Ammonia from these systems is over 100x cheaper than H2 electrolysis even though they include an H2 electrolysis inside. 100x difference alone in onsite storage needs. A trailer with high pressure tube tanks is 20x more expensive than liquid ammonia/propane trailer, and it holds 5x less H2 even at 700 bar. transporting the 700 bar (instead of 350 which is still the same trailer cost/kg of H2) is needed to move enough energy at a time.

So direct H2 systems simply need a pipeline dump. 50bar H2 pipelines are much cheaper than 200bar, including the compressors to power them. With pure H2, purification and compression requirements make it more capital intensive than Ammonia production.