A lot of local fruit is available that isn't industrial scale farming or transport hasn't been figured out for some very sensitive fruits like Pawpaws. Others, like some cherry varieties, are easily found and shared. Also apple trees that grow in the upper Midwest from generations of native and pioneer orchards long untended.
Most fruit that is indigenous to the US is available wherever and freely, if you ask. But a problem with fruit trees in the US is they are imported by farmers and growers who want to sell those fruits. And like most folks in developed nations, fruit purchased from a store is inherently more trusted for quality than random neighborhood fruit.