In general, Amazon doesn't aqui-hire as much as some other tech gians. They acquire things instead of spending CapEx (Whole Foods), to vertically integrate (Annapurna Labs), or things with very good customer bases, and brands (Twitch, Zappos).

Heptio had none of these.

EKS seems like more of an "OK, fine, if you really want K8s, you can have K8s" move to me.