Where did all the goblins go?

[Selmo]

After the destruction of the Ring and it's power over the minds of the Orcs, I can imagine the Orcs of the Misty Mountains becoming useful members of the Reunited Kingdom.

Aragorn's forces would be too strong for them to take up their old ways of making a living. To survive they would have to take up a more honest trade. They could start by opening up their tunnels through the mountains to provide safe, all weather routes for the ever-increasing trade between East and West, for heavy tolls, of course.
They could then branch out into providing other services for travellers: a chain of inns along the main roads, ending in a hugh hotel in Fornost; a nation-wide pony-hire service; fast food outlets across the North.

Building on their experiences in Isengard and their profits from road-houses, the Orcs could go on to develope steam engines, leading eventually to OrcRail, a transport network spanning the whole of Middle Earth, creating an era of peace and prosperity, binding the Reunited Kingdom to it's neighbours in alliances of mutual trade.

The orcs become the glue that holds Middle Earth together.
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