I don't follow tractor makers (except I'm stoked about the possible return of the Scout, from VW ownership of the remnants of International Harvester), so I dunno what's going on there... But it's not as if incumbent car makers haven't made EVs. The EV Ford Ranger 1998-2002, s-10 EV 97-98, EV1 96-99, and Rav4 1997-2003 all happened. Those didn't work out so well, so they stopped for a while.

Now they're making EVs again. But they don't want to over commit to EVs and have inventory left over. There's also battery supply issues. Otoh, some models are made with modular drivetrains and could be built as an ICE, a hybrid, a PHEV, or even an EV with poor range, so if dealer orders change, they can adapt.