Why doesn't the "One Ring" make itself impossible to remove?

Question

The "One Ring" seemed capable of changing its size, which is why Frodo wore it on a chain around his neck - to keep from accidentally losing it in the same way it was lost to Gollum.

The Ring seems to have a desire to get back to its master and Frodo is told not to wear the ring, because it would allow Sauron to find him. Reading here - putting on the ring doesn't make him easier to find, and there are at least 6 times where he puts the ring on, but it remains that there is a danger in wearing the ring, which is in the ring's benefit.

Sam, with the ring within Mordor says:

He’d spot me and cow me, before I could so much as shout out. He’d spot me, pretty quick, if I put the Ring on now, in Mordor.

Why doesn't the ring attempt to constrict itself onto Frodo (or anybody), so that they are more easily corrupted and its master can more easily find it?

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_{For an incredible amount of information on the nature of the ring, see here}

Answer 1

The ring doesn't seem to act until it wants to leave someone, even then it has no control over where it goes or who picks it up.¹

It boils down to the fact that it doesn't appear to have the ability to actually do much harm to its barer, beyond driving them, and those around them mad.

The additional weight of the ring while being carried is purely psycological, it doesn't affect someone who isn't carrying the ring.

As Frodo clung upon his back, arms loosely about his neck, legs clasped firmly under his arms, Sam staggered to his feet; and then to his amazement he felt the burden light. He had feared that he would have barely strength to lift his master alone, and beyond that he had expected to share in the dreadful dragging weight of the accursed Ring. But it was not so. Whether because Frodo was so worn by his long pains, wound of knife, and venomous sting, and sorrow, fear, and homeless wandering, or because some gift of final strength was given to him, Sam lifted Frodo with no more difficulty than if he were carrying a hobbit-child pig-a-back in some romp on the lawns or hayfields of the Shire.

^{The Lord of the Rings | Mount Doom}

^{1. The film seems to show the ring bouncing away from Gollum but this isn't supported in the text.}

Answer 2

The relationship between the bearer and the ring is a partnership, with the ring attempting to become the dominant partner.As the ring becomes more powerful the closer it gets to Mordor so it takes more effort to resist it, which is why Sam's help is so important.

Answer 3

Treachery is the nature of evil. Therefore the ring can never bind itself to a single bearer it can only betray. Isildur and Gollum were betrayed by it when they lost it. Bilbo was forced by Gandalf which means he was the only host to part with it peacefully. Deagol was killed by family and Frodo had Sam steal it from him and Gollum was pushed over the edge-literally. Only a host body of greater evil than Sauron would persuade the ring to bind itself to the bearer. The ring could betray Sauron for the ring is more powerful than he. Sauron's soul is in the ring naturally it will seak a stronger newer body to inhabit.