Question about the turn players speak when someone is about to win the game

[jonhy1996]

Actually, I am really confused about how the game is supposed to be played... Whenever a game ends like this i feel something is missing from the rules.
To make my question clearer:

All 3 players are lvl 9 and 1st player is battling a monster for the win.

Let's say both 2nd and 3rd player have 1 card that can stop someone from winning and a monster in hand, and everyone knows that because they drew them face up recently.

If 2nd player stops 1st player, then 3rd player will be able to stop him and win. There are extremely few cards that 2nd player can have, that can defend against 3rd player, so in 90% of cases he will not win the next round, and 3rd player will win. So if he uses his card he loses almost certainly.

If 3rd player stops 1st player, then 2nd player will win, because 3rd player won't have any cards to stop him.

So no one has incentive to play his card to stop player 1 because the other player will win in the next turn. Shouldn't there be a rule that forces someone to use his card in this case, or at least have a priority on who should act first??