Particularly when one compares the aspects of scouting, harassing, turtling, and expanding to the similar goals of Go to control board territory, eliminate enemy stones, and defend strong holds.

The real difference is in Starcraft you're dynamically adjusting to your opponent's strategy in real time with fog-of-war obscuring your view and no benefit of a turn based cadence.

I haven't played much Starcraft but the thing that makes Go endlessly fascinating is the dynamic behavior of groups and the fact that a single stone placed on one end of the board can instantly & completely reverse the fortunes of stones on the other end of the board. Is anything similar possible in Starcraft?

Yeah, I won a game earlier tonight because I kept a scout in his base, which he didn't notice, and was able to respond immediately to his tactics, allowing me to use minimal forces to great effect.

Although I won, technically my play was sloppy because I didn't have to utilize all of my resources to wrap up the game.

Things don't go to the extremes of Go in SC2, but the dynamic is still there.