King Edward's father, thought him absolutely unsuitabe for the position; however , he DID , indeed , become KING EDWARD ; only to abdicate the throne. Why don't you knw this ? Before you decide to post a reply, please think twice begore doing so, when you don't even have the most tenuous grasp of the topic.
But, more to your point, nothing's impossible when it comes to this "royals" business. After all, the Windsor family aren't even the legitimate monarchs in the first place. The Stewarts are the legitimate British monarchs. So, if an illegitimate dynasty can sit on the throne for 300 years, ANYTHING can happen.