This product is how Alphabet itself gets all its business done, so that seems unlikely. Could it be replaced with something similar in the longer term future,

This product is how Alphabet itself gets all its business done, so that seems unlikely. Could it be replaced with something similar in the longer term future, like the Hangouts -> Meet transition? Sure. But that transition was pretty easy since it was still the same accounts on both ends, which would be true of any future Meet transition as well.