The one big factor is simply the economy people no longer have the amount of money to go especially familys & its surposed to be a family sport the money just is'nt there cost of living keeps going up but not wages so people are having less & less to spend which results in lower crowds henc the price goes up to make up the difference which will only result in less people going & so on, the only ones making all the money is the very top riders & the manufactures of engines & parts & that is what has to change the sport is just to expensive for riders co's there is no money out there , I think you will see more riders retire because its to expensive, & I think this will not be solved unless bikes are standardized that will bring cost down riders won't ask for as much & admissions would not be so high , SIMPLE realy. Then on top of that you have bspa & FIM evry year introducing some gadget for the bikes which is more expense so there not helping, well that's my opinion what do you all think.