You mow one large yard every couple weeks. Landscapers mow multiple in a day. It's already a low paying gig, with how expensive batteries are I don't think they'll be using electric equipment anytime soon.
I've heard of landscapers moving to Ford Lightnings and charging equipment on-site (and maybe while driving?). Of course, those are roughly $100k each so those are probably landscapers with much higher margins than your typical residential landscaper.