Why do you think there are no hybrid trucks? UPS has had them for years, so has Waste Management. Workhorse sells a hybrid delivery truck:
https://cleantechnica.com/2017/02/16...delivery-vans/
The reason there aren't more consumer hybrid pickup trucks should be obvious. It's the same reason it's hard to find something like the '80s to mid-'90s Toyotas (or other small pickup), despite their lasting popularity in the used market. Most of the people who buy new pickups want something that's big (if not gigantic) and noisy, because they're compensating, and they're willing to pay a lot more for this.