I agree it is highly unlikely to have been Tolkein's interpretation, but playing devil's advocate, it could be interpreted as such, and would make entire sense as to why the (minor ring) bearers will not use it to bring down Sauron down and why they effectively send the ring into the heart of his domain.
....
Again, I'm sure that none of this was Tolkein's intention, but it is interesting (and fun) to speculate on what an alternative LOTR trilogy could have produced.
And to expand on your idea, maybe Gandalf and Elrond had to go over the sea because otherwise their own rings would corrupt them and lead them to seek power? But then that suggests that they knew that they were being corrupted and were fighting back!
Aragorn showed he could match minds with Sauron with the Palantir; perhaps his heart was pure enough to wield the Ring
The palantir is different from ring though - it's just a communicatin device, not something that corrupts of itself.