All joking aside, you are correct, they have to try something. This however is the dangerous path they set themselves.
The DED have been tasked, or have tasked themselves with putting the TT on a commercial footing, first by making the event pay for itself, and then making a profit.
It is fairly easy in the early years to show year on year growth ( whilst at the same time patting themselves on the back on how well they have done), the problem is as each year passes, it becomes more and more difficult to show an increase in revenue/profit, so in order to delay the inevitable, someone will come up with a hairbrain scheme that has the potential to bring in loads of profit. All's you need to do is to get everyone talking about it in a positve light, and when it does not work out, they pull the 'well at least we tried, and you were all in favour of it'. What they dont need is a load of people pointing out from the offset that it is not going to work because of A,B,C.
There will be a point where they will reach saturation point in terms of increased growth.
What happens then will be up to the Isle Of Man Goverment.