Starcraft has codified openings too. Even casual players use them, and on high level these are almost mandatory (except for a few players that develop their own buildorders). First 3 or so minutes of proffesional games are usually played "by book" with very small variations, and you can recognize from minor details how the game will look until someone make a mistake.

The difference is - in starcraft the metagame isn't stable - in a year buildorders that were very strong become almost useless (because of balance patches, better strategies discovered, and most often because the popularity of buildorders make them weaker - more people blind-counter them).