I feel like some accor properties are slowly following. Raffles Singapore appeared out of nowhere and is now available.
I don't buy it is a system thing that Accor controls - highly suspect it's backend is for each hotel to control and many don't want to follow through with it (I mean who does as a business). Either that or Accor hasnt been clear with them how they're being compensated for the stay nights (which i could see being the case).
The stay night scenario shouldn't have needed any major backend system overhaul, rather the hotels to fall in line with the policy.
Either way its a huge botched mess for a very significant change that hasn't eventuated and as a customer it feels pretty cough.