Iran at some point will have to do something about the naval blockade.And except opening the strait of Hormuz, Iran has no option.
Blockade literally takes the whole economic cycle back to zero.You are unable to generate the revenue, in turn - unable to fund the critical imports - industrial production falls, internal cash flow comes to halt - giving rise to inflation that can make the things difficult to handle internally.
I'll argue this strategy is more dangerous than the active bombing , of course if employed for good time.