I could never figure out why Android did not copy iMessage and offer the same within the Android ecosystem. The Android equivalent of the green and blue bubbles. No one is interested in a carrier driven initiative like RCS at scale.
Good question. It seems that there may be too many PM’s trying to make a name for themselves. There may also be a lack of vision, and a lack of willingness to let a product live and to make incremental changes to it… it either succeeds right away or they replace it with a similar product (rebranded) /shut it down.