Speaking as early 2012 owners with many (but certainly not all) things sorted, not sure why we would change to the new model - likely a lot of cash out for what is a new/slighly different toy. Yes there will be some who will upgrade (if that is the right term) but the real key to success will be capturing new customers many new to the marque. Other have made the point about dealer access esp. in the US but it is not great in the UK as the network here has thinned a lot so that is a challenge. The real issue will be competition for other things to do with the £50+(+?)k required to play esp as gas guzzling cars in general are becoming less socially acceptable.
And another thing...almost nobody today buys a car outright with cash....what would the PCP payment on the new 3 wheeler be??!!
Perhaps Morgan could lead the way with a subscription usage business model???