And keep in mind that no agreement, apparently not even the ceasefire, have been signed. So this is all armchair analysis from all sides (except you, because you apparently already know).
In any case, it's not clear the cease fire will make it to the weekend so we will all (except you, who have the benefit of already knowing) have to sit tight to find out what happens.
Of course if Iran's government stopped being so fucking crazy the US would be happy to provide economic aid. The US even offered nuclear power to Iran for free, which they turned down. [1]
I'm not believing any citation you provide because you haven't provided any. You looked at Iran's plan (which doesn't matter) and then decided that somehow they had the leverage and the US and Gulf States would agree and have but no choice to pay Iran shipping fees. This is incorrect. Nothing was agreed to. Iran's proposal is mostly worthless, and you're making stuff up.
[1] https://www.rferl.org/a/us-says-iran-rejected-nuclear-offer-...
As part of that effort, Washington offered to support a civilian nuclear program for Iran, *including a proposal to supply nuclear fuel free of charge on a long-term basis*.
Which negotiators from official channels have stated this?
I'm of course arguing that this won't happen for a variety of reasons, but I'm also arguing that nobody on the US and friends side has agreed to this at all, and Oman from what reporting I have is against it as well though you've suggested they would get a windfall.