What Tesla is doing is normalizing non-crappy battery power, and that is an important effort. Too many manufacturers either intentionally or unintentionally hurt public opinion of battery powered equipment (in addition to just making bad products) by underpowering them (not just auto makers, but many other industries too like yard equipment). Tesla might not have huge market share, but without Tesla I think all automakers would still just be making embarrassing golf cart cars, but a few of them are actually trying to make decent ones now. Likewise, I think Tesla has helped drive the desire to build charging networks, another huge requirement for sustainable transport adoption.