As for the statement: فَتَحْنَا عَلَيْهِمْ أَبْوَابَ كُلِّ شَيْءٍ (We opened for them doors of everything) appearing in the third verse (44), it warns human beings at large that no one should be deceived by seeing the affluence of persons or groups and hasten to the conclusion that these were the people on the correct path and that their life was a model of success. One should never forget that among them there could be some of those disobedient ones who have been picked out to be seized with sudden and grave punishment.
Therefore, the Holy Prophet ﷺ said: When you see blessings and wealth raining upon someone - though he is deep in sin and disobedience - then, know that he is being lured into destruction اِستِدرَاج (Istidraj), that is, his affluence is an indicator of his being seized in punishment. (Narrated by Ahmad from 'Aqabah ibn ` Amir as in Tafsir Ibn Kathir)
Following a narration from Sayyidna ` Ubadah ibn Al-Samit, leading commentator Ibn Jarir has reported that the Holy Prophet ﷺ said:
When Allah Ta’ ala wills to have a nation survive and grow, He creates in them two qualities: (1) moderation in everything they do, and (2) modesty and chastity, that is, abstinence from indulging in what is not right. And when Allah Ta` ala wills to destroy a nation, He opens for them the doors of breach of faith (Khiyanah), that is, they appear to be successful in the world despite their breaches of faith and wrong doings.