Hawaiis a bit different than most. Not a lot of vacant land relative to places like the lower 48. And it'd be a shame to deforest such a beautiful place to make room. Sorry if Hawaii is unaffordable for most.

Now in most places yeah supply and demand will affect housing. But really there aren't enough good paying jobs for there to be more homeowners to own a home. If they built more houses they'd sit empty. The only people who don't have at Least an apartment are the lazy homeless. That problem can't be solved.