What is the appeal of the carrier-based messaging like RCS? My experience with various carriers was that the features they provide is always very late and gene

What is the appeal of the carrier-based messaging like RCS? My experience with various carriers was that the features they provide is always very late and generally inferior to existing independent alternatives (the voicemail situation is a very good example). So let's be happy that RCS is not catching up, because then people will switch to different messengers which will have chance to provide real innovation.