Whether we see it in our lifetime, or whether it takes longer is irrelevant. Sort of like speculating on an aircraft mishap a few hours after it happens: what do you prove if you're right?
However, there are many tech companies and entrepreneurs (American and foreign) that will pursue this technology, irrespective of what the pilot unions think. And these innovators will continue to make progress. The improvements and spinoffs that are a result of this pursuit will drive new technologies over the coming decades (think "space program").
ALPA, SWAPA, and APA can partner / be involved / be on the committees / etc... but vehement proclamations that "this will not stand!" are futile and foolish.
Imagine telling Doolittle in the early 1930's that we'd be landing on the moon in the 1960's.
Probably a bad analogy, because I'm sure Doolittle would have supported efforts to make it so.