[afdbcreid]

There are two reasons this logic is incorrect.

1. It's not Iran's mercy, but deterrence. If Iran was to target critical infrastructure constantly, Israel and the U.S. would bomb its much more easily. Both sides currently avoid doing that for the same reason.

2. Targeting the same places again and again will mean they cannot target other places, like cities, where even a miss has greater impact. So the economy of munitions make them prefer to not do that.

[fakedang]

Uh, Israel and USA are already bombing core infra in Iran. Iran is retaliating against Israel as your point 2 states, and against the Gulf countries on their critical monetary assets - because that's where it hurts either party. Targeting civilian infra in Israel means Israel's image of infallibility is shattered, while targeting monetary assets in Gulf countries (like gas fields, refineries, financial districts, etc) means that they're intent on applying pressure to the Gulf countries. They can't do the former to the latter because of the extremely large (90%+) expat populations, and they can't do the latter to the former because Israel's sensitive assets were presumably prepared for the long fight, so are likely to be heavily guarded.