B.C. Ferries was announced after the two privately owned ferries to Vancouver Island both went on strike https://vancouversun.com/news/this-day-in-history-1960-phil-gaglardi-tsawwassen-ferry-terminal?tbref=hp
Unfortunately, then & now, there still seems to be no plan to have a train from the Tsawwassen+ferry+terminal to YVR. Just like no train from the Horseshoe+Bay+ferry+terminal to YVR.