I agree with this. Toyota announce a while back that their goal is to have every vehicle in their lineup as a hybrid. They're slowly moving to this by making their lowest volume vehicles, Sienna, Venza and Sequoia, hybrid only. Only the Tacoma and 4Runner have no hybrid option now but the rest of the lineup is available as a hybrid. If they moved to all hybrids then they could get rid of the transmission completely.
IMO Toyota's logic implementing electric propulsion makes the most sense, especially the Prime models. Infrastructure and recharging technology isn't good enough yet for the mass adoption of electric only vehicles. Plug in hybrids are a nice middle ground. You can drive on electric power in city stop and go driving but have the ICE for highway driving and road trips. You can plug in to recharge the battery if you want and if a charging station is available but it's not necessary as gas stations are everywhere. This is especially important for people who can't recharge at home, like folks who live in apartments, condos or townhouses.