PACTOR 4 modems cost $1,600+ creating a paywall for HF digital email

The most reliable protocol for sending email over HF radio (PACTOR 4) requires a proprietary hardware modem manufactured by a single company (SCS in Germany), priced at $1,629 for the DR-7400. Who has this problem? Every amateur operator and emergency communicator who needs reliable HF data transfer via Winlink. So what? Free software alternatives like VARA, WINMOR, and ARDOP achieve only 30-50% of PACTOR 4's throughput and are significantly less robust in poor propagation conditions. So what? During emergencies when Winlink is needed most — when internet and cell infrastructure is down — the operators who can actually move traffic efficiently are only those who could afford the $1,600 modem on top of their $1,000-$2,000 HF transceiver. So what? This creates a two-tier emergency communications system where reliability correlates with personal wealth rather than training or skill. Why does this persist? SCS holds patents on PACTOR 3 and 4 and has stated that the declining ham radio market makes it uneconomical to produce a cheaper modem. The amateur radio community has been unable to create an open-source hardware alternative that matches PACTOR's adaptive error correction performance.