By laying off Saudia and Qatar, Iran successfully prevented the possibility of an Arab gulf concensus and alliance forming against It, which could have created more military problems for Iran than Iran was prepared to handle during this ME war.
No Arab consensus against Iran explains why no united Arab force has attacked Iran openly in this war. The Arabs as a group "froze" in the face of a potential Civilizational clash with Iran, which is either miraculous on irans part or proof that an actual Arab alliance ( in any form) does not exist.