We also need to understand that state requirements by law in British Columbia(and most other places in Canada where they log) only allow full wraps for use in logging or forestry. It is considered a safety feature/requirement. BC has a rather unique no fault insurance system for workplaces. Part of it was due to the state regulating safety heavily.
It is easier for Husqvarna and Stihl to put a full wrap on nearly everything headed to the PNW than split the markets between Oregon, Washington, Northern California and British Columbia. Besides, most fallers in the PNW appreciate the advantage a full wrap gives, and have been using them for quite some time.