Governments do fall to internal revolt/collapse regularly. I mean, Iran has done so within the memory of most of its senior leadership! They understand this much better than I do- Khamenei himself played a major role in toppling the Shah. Just generally that doesn't happen while being attacked by other countries air-power, which as a general rule makes populations support their governments rather than start marching in the streets against them.

Thanks to historians, we can understand things like the collapse of the USSR better (my favorite English language book- I am sadly monolingual- would be Plokhy's _The Last Empire_) and see the personal and impersonal forces that ended up tearing the country apart, and doubtless some of those are present in Iran right now. But I personally would not bet on these strikes helping to topple the existing government.