While wealthy coastal counties bear the brunt of landfalling storms, poor residents in inland counties are navigating an even bleaker insurance market that leaves them at risk of no coverage.By Amy Green, Peter AldhousOKEECHOBEE, Fla.—Steve Cates was walking back to his house from his mailbox, flipping through a clutch of newly delivered letters, when one envelope stopped him in his driveway. It was from his insurance company.