system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] If the One Ring was so powerful, why couldn't the bearer of the Ring control the ring wraiths? I mean, Sauron was still a shadow without it. And the One Ring is what corrupted the men into wraiths, so the bearer should have power over them, right??

If a simple (in a good way. honest, not seeking power) Hobbit wouldn't have enough power to wield it, couldn't Elron or Gandolf or Beorn?  

*Could* the ring, in the right hands, ever be used for good?
gpt
The bearer is not the *owner* of the ring. Bearing the ring is not the same thing as claiming it and possessing it. Ownership and possession have metaphysical power in Middle Earth, and there's a distinct difference between carrying something powerful and being the user of something powerful. 

Thus why Sauron was suddenly so distraught and knew precisely where to look when Frodo finally up and claimed the Ring as *his*, rather than just being the one who happened to be carrying it around. 

As to your other question, the Ring, being constructed as it was, would *always* be corrupting. Gandalf knew he would succumb to the Ring's influence if he even touched the damn thing(hence why he refused to even pick it up), and Galadriel had an entire prophetic crisis when Frodo offered it to her. She could see that she would be able to use the power of the Ring to overcome anything and everything, becoming the mistress of the entire world and bending it all to her perfect will... and in doing so, would be a horrifying terror, a sort of evil version of her perfect self. 

So, no, the Ring can't be used for good.