A global system would work better. Additionally the lottery in general isn't a "Money Making Method" Even in real life theres a profit margin for the algorithm that prints tickets if you are refering to scratch offs, and the fact that the odds of winning a "pick x" is based on the size of x such that they only contribute a percentage of buying towards the pot. Otherwise there would be no profit for the lottery in which they could donate money to schools/government/etc.
So buying a ticket and picking a random number and then having a number randomly drawn weekly and making it a global event wo