About 15-20 years ago, pickups were the go-to vehicle for DIY electric conversions (particularly the Chevy S-10). You could put the heavy lead-acid batteries under the bed and therefore lose no space.
There's no fundamental reason why trucks are less likely to electrify than other vehicles. In fact, the greater fuel savings makes it seem even more likely.
The only thing standing in the way is that some people who buy pickups are part of the idiotic anti-environment movement that likes to "roll coal" (i.e. modify their trucks to spew black smoke). But not everyone who buys pickups is like this, which is why fuel-efficient pickups are a thing.
The torque and power of the electric drivetrain make it possible to make an insanely good truck. It'll happen sooner than you think, certainly before 2022.