Disappointed

I don't understand our cellular companies. They have competitions in place every single year end to make us forget about the high tariffs we pay. However the competitions they have has prizes no-one wins. Every person I know of only wins the small prizes. The big ones you only get to a certain point,then it's back to square one. How come? Is it really possible for no-one to be able win any of the grand prizes. If there is ten of them only three gets won, if there is only one chances are there won't be a winner. Makes you wonder if these competitions are only there to make us buy more airtime and data to make them richer. Very disappointed at the Voda shake competition that's running, in fact every single competition they have...