But that's the problem, isn't it? The Queen and Charles, and presumably William, would all have all been given a solid constitutional and historical education
When William was at Eton, he often used to have lunch or tea privately with the Queen on a Sunday. I expect a lot of discussions were had then.
Princess Margaret (and I'm sure she was a bloody difficult woman!) was always fiercely loyal to her sister, even though I'm sure she must have had some resentment over the Townsend affair.
She could have married Townsend. The Queen and the then PM, Anthony Eden, put a lot of effort into finding a way for it to happen. But she didn't like the conditions - and, as time had passed, her initial infatuation had probably passed.
Looking at it from a present day, Mumsnet perspective, no-one would think it was a good idea for a young woman in her early twenties who had quite recently suffered a major bereavement to rush into marriage with a divorced man sixteen years her senior, who already had two children.