The Wives of the Prophet are not like Other Women

This Ayah is addressed to the wives of the Prophet who chose Allah and His Messenger and the Home of the Hereafter, and remained married to the Messenger of Allah ﷺ. Thus it was befitting that there should be rulings which applied only to them, and not to other women, in the event that any of them should commit open Fahishah. Ibn `Abbas, may Allah be pleased with him, said: "This means Nushuz (rebellion) and a bad attitude." Whatever the case, this is a conditional phrase and it does not imply that what is referred to would actually happen. This is like the Ayat:

وَلَقَدْ أُوْحِىَ إِلَيْكَ وَإِلَى الَّذِينَ مِن قَبْلِكَ لَئِنْ أَشْرَكْتَ لَيَحْبَطَنَّ عَمَلُكَ

The particular position of the blessed wives and the rationale of hard restrictions placed on them

يَا نِسَاءَ النَّبِيِّ مَن يَأْتِ مِنكُنَّ بِفَاحِشَةٍ مُّبَيِّنَةٍ يُضَاعَفْ لَهَا الْعَذَابُ ضِعْفَيْنِ ۚ وَكَانَ ذَٰلِكَ عَلَى اللَّـهِ يَسِيرً‌ا ﴿30﴾ وَمَن يَقْنُتْ مِنكُنَّ لِلَّـهِ وَرَ‌سُولِهِ وَتَعْمَلْ صَالِحًا نُّؤْتِهَا أَجْرَ‌هَا مَرَّ‌تَيْنِ وَأَعْتَدْنَا لَهَا رِ‌زْقًا كَرِ‌يمًا ﴿31﴾