We had similar concerns when we were considering our current coach....it would be an 'orphan.' I can assure you there will be no more of an issue with parts, tech support, etc. than with most any other coach of that vintage. We have visited the Country Coach facility in Oregon, in 2014 and again in 2016. They offer parts and full service there. They have all the fiberglass molds used to make parts of most every coach they ever built.
Also, Winnebago Industries bought the old CC factory and service center in 2016. Winnebago plans to move all their diesel pusher manufacturing to Oregon and has said they may start building Country Coaches in the future. So, Winnebago now offers factory service and repairs for both Winnebago coaches and Country Coaches at both Oregon and in Forest City, IA.
We've owned our coach since 2013 and have had no issues getting anything replaced or repaired. Most of the components used on the coach are same used by others.
CC's are sturdily built. They are great coaches.