[FrozenVoid]

Today gamers don't like to multi-task and Starcraft(and its clones) is a multi-tasking monster(scouting,economy, building, combat), so similar RTS which force multiple issues at same time are outfoxed by simpler game mechanic games where attention is more deeply focused and players can gain skills easier. Another factor is RTS are anti-casual, they don't forgive mistakes and only a tiny % of gamers can handle the stress of constant losing/failing, in context of highly demanding, multitasking heavy game. The genre doesn't accept game style variations either - a single cookie-cutter build order is the best one, the rest is suboptimal and loses you either time or money.