Venezuela wasn’t a regime change war it was a US-backed palace coup that left the entire regime except for the guy at its head in place in exchange for a narrow set of policy favors to the US.

It has little in common with Iran, which is more like the 2003 Iraq war (but, so far, without committing ground troops, but there is no way to maintain that with Trump’s stated goal of “unconditional surrender”; that’s going to require a ground forces occupation at a minimum, and probably a ground forces invasion to acheive it) than it is like the recent intervention in Venezuela.

Even if they are not particular fond of the regime that is in the process of being destroyed, the Iranian people are likely to resist that, just as occurred in Iraq (with the most significant resistance there coming from forces that were opposed to Saddam’s regime and which had been actively suppressed by it while it was in power.)