You have answered my question almost perfectly.
A sportive is an opportunity for a novice, newbie or a cyclist who is NOT a competitive member of a cycle club to get the challenge and feel of riding a bike in a pack of riders against the clock.
My frustration yesterday was born by the 'ultra quick' filling of the Mad March Hare. My suspicions were that the entrants are 'friends and club colleagues' of the organisers, who got the information about the ride months before the first day of on-line entry.
This one I would like to shame, as it appears to me to reek of 'insider information'.
I would bet some money ( the entry fee ) that most of the riders signed up to the Mad March Hare are competitive club riders from local clubs, aiming to use the event as a reliability trial.
This brings my second question to bear. The moral responsibility of the organiser.
They are the people who decide who rides and who doesn't. They have ( I am sure ) given warning to their muckers to 'get in early' or "we will have proles on old tatty bikes with us."