Before Trump nixed the JCPoA, Iran had a firm order with Boeing for $16.6 billion worth of aircraft, and a firm order with Airbus for $25 billion worth of aircraft. Taken together, that's one of the largest aircraft orders of all time. Iran is not a small market.
> In other news, setting up businesses that go around US sanctions is not something the US will just wave off. Bullies don't accept their authority questioned.
Businesses in the UAE regularly trade with Iran (and Russia, for that matter) in the normal course of business.