What Kills Rallies?

[Triton]

When you think about it, a lot of rallies have disappeared over the years for one reason or another. I know that I had a long spell away from the hobby due to work commitments and getting married etc in fact the period that I was in the "wilderness" was from 1993 to 2010.

Whilst i realise that some rallies were replaced by others such as I believe that the one at Merrymeet in Cornwall was replaced by the larger event at Boconnoc, what happened to the rallies at places like Newton Abbot Racecourse, Yelverton and Plymouth Hoe. Woodlands Leisure Centre near Dartmouth use to hold an annual event as did the now closed National Shire Horse Centre at Yealmpton in South Devon. Has the one formerly held at the World of Country Life at Exmouth ceased to exist? The latter was always poorly publicised and took place on the same weekend as the WESES one.

Are there any locations which could possibly see the re-introduction of rallies which took place years ago?