It’s actually a good strategy from amathematical point of view as well.
If you have a lottery where the jackpot prize rolls over if it isn’t won, the expected return from buying a ticket for a draw with a huge jackpot can be positive, because you have the potential to win money wagered by players in previous draws.
However, it’s still not worth buying loads of tickets in that situation, because the expected positive return has such a high volatility that it’s still overwhelmingly likely that you’ll lose it all.
