Change policy to make smaller farm operations a viable business, and make it more difficult to build exurban homes and retail.
The problem is people want same variety any day of the year. Stocking local apples as they come is a PITA for big supermarket chains. And most people don't care enough to go to farmer's markets or local specialty shops. Let alone that usually they ain't open on saturady 22:00 when some people find time to go shopping.
support pick your own orchards
Plant an apple tree
Apples are tough to grow in my region, which is formerly known for it.
There's the Cedar-apple rust issue, bug issues, and raccoon issues.