A) terran was going to invest into that tech anyway.
B) the tech cost is very small when you consider terrans can get it out while zerg is stuck on tier 1. This is especially the case since they can do that while having equal economy to the zerg AND how it completely and utterly nullifies all forms of zerg aggression (defense is expensive, so if your opponent can’t attack you, then you are saving lots of $$$$).
???
You are joking, right? Terrans are the ones who don’t have to make decisions because they can make 1 super hero unit. What are you smoking?