That would mean that instead of an engine, you’re lugging around a battery pack, which is just as heavy while giving you a fraction of the range of an engine. Not to forget that battery cells have only a finite lifespan.
Meanwhile, OHLE gives you infinite range and room for major weight savings. Plus you can keep running the same power system for decades.
Incentivising people to bone amidst falling birth rates is like addressing a broken leg by handing out painkillers.