Unfortunately, natgas has a large sunk cost advantage. If we were building from scratch in 2025, syngas for the last 2-10% would be competitive. But we have a lot of natgas infrastructure. Syngas's advantage is that it can be locally produced and stored. Natgas has to be shipped large distances, but we already have the infrastructure to do that.
Yeah, if you discount it being zero carbon, syngas is not cost competitive with natgas at all.
https://terraformindustries.com/ is betting the cost crossover point is soon.