Agreed Mike if I was ever a promoter my first job would be to get a survey put together for past fans to complete as to why they no longer go, granted we can guess most of the reasons but I bet there's a host of others to.
The big challenge at the moment is even if you came in as a new promoter with say 200k you could burn through in a season without blinking, you put together an attractive side , you move fast to get quality replacements for long term injuries etc you know in the current environment visiting teams will be turning up every other week with 1-2 riders missing, r/r etc.
So somehow its not enough to have 2-3 forward looking promoters you need every single one to agree to level up.