I don't think bus service is anywhere near that level in the United States. You might find a greyhound line to take you somewhat close to where you want to go, but I don't think they have wifi. Maybe a train has wifi, but again if one does run that way it'll be limited service.
Greyhound start a service called BoltBus in 2008, which offers wifi, but there is very limited service and does not serve western NY. https://www.boltbus.com/