You could argue that doing any action, such as accepting the wager, has a small but much larger than 1/3^^^3 chance of killing 3^^^3 people. You could argue that any action has a small but much larger than 1/3^^^3 chance of guaranteeing blissful immortality for 3^^^3 people. Therefore, declining the wager makes a lot more sense because no matter what you do you might have already doomed all those people.
You could argue that doing any action, such as accepting the wager, has a small but much larger than 1/3^^^3 chance of killing 3^^^3 people. You could argue that any action has a small but much larger than 1/3^^^3 chance of guaranteeing blissful immortality for 3^^^3 people. Therefore, declining the wager makes a lot more sense because no matter what you do you might have already doomed all those people.