Every group establishes the tools and protocols of communication very early in its formation. Only new groups -- and perhaps only new groups in new situations -- have the chance to immediately adopt new forms of communication. For every other group, the group needs a lot of time to 1) recognize what is being lost in the current means of communication, 2) understand the loss's cost to the group, 3) set out to discovered tools and/or protocols that enables both to continue the successful communication and to reduce/eliminate the recognized lose, and, finally, 4) adopt the change with planning for the concomitant communications turbulence. 16 months is far too short a time to adopt Wave. For those that have adopted Wave within those 16, the time since adoption has been far too short to understood Wave effectiveness.
Google pulled the plug on Wave too soon.