Accountability despite knowledge

وَأَخْذِهِمُ ٱلرِّبَوٰا۟ وَقَدْ نُهُوا۟ عَنْهُ وَأَكْلِهِمْ أَمْوَٰلَ ٱلنَّاسِ بِٱلْبَـٰطِلِ ۚ وَأَعْتَدْنَا لِلْكَـٰفِرِينَ مِنْهُمْ عَذَابًا أَلِيمًا

And [for] their taking of usury while they had been forbidden from it, and their consuming of the people's wealth unjustly. And We have prepared for the disbelievers among them a painful punishment.