Twilight of the open tech era
Today's tech giants achieved success and scale by promoting their openness, but the industry's open doors are shutting, one by one. Today's dominant tech platforms are privately owned and governed, and their owners will readily adjust the "openness" dial to suit their needs — booting users perceived to be undesirable, blocking competitors, and locking down key data structures (like Facebook's "social graph") to prevent users from choosing alternatives.