I live in a US wine producing region... there are a few people in the area who produce non-grape wines or non-commercial grape varietal wines as hobby projects. Strawberry wine in particular is memorable - a bit like rose; very nice on a summer day. I guess what I'd say about these wines is that they often simply don't fit our norms for wine. For example, when people come to my area they are either looking for wines that are refreshing to counter our hot weather, or wines that are big bodied and stand up against food. The non-grape wines are seldom refined to the degree that they fit traditional American wine drinker's tastes and expectations. In our area, many wines are > $50+/bottle, some $100+/bottle, and it's really hard to convince a consumer to pay that for a strawberry or cherry wine, thus they get sidelined as toy projects and thus forgotten about as legitimate wines.