For most of their history, the tech companies were so focused on the challenges of fast growth that tending to what was on their platforms wasn’t as urgent, say

For most of their history, the tech companies were so focused on the challenges of fast growth that tending to what was on their platforms wasn’t as urgent, says Geoffrey Parker, a Dartmouth College professor of engineering and co-author of a book about the rise of such businesses called “Platform Revolution.” “Now,” he says, “it’s exploding in their face.”