Two generations of pinephone disagree. I think the price is due to labor costs for software.
Having a pine64 style competitor is problematic for Purism since it's cannibalizing their sales. It's likely contributing to the even higher prices needed just to keep the lights on. Which just creates more pressure diverting potential sales towards pine64.
Would Purism even move more product if their prices better matched pine64's? Is there a queue of would-be librem5 buyers waiting that just can't stomach the price? How many people are there really who want a chunky phone with work-in-progress software, regardless of price?
My prediction is after Purism implodes Pine64's prices start climbing.
Mostly, but not only. There's also user support, and PinePhones are much cheaper to build.