I genuinely don't know what you guys are talking about. She DID hammer Trump's economic policies. She DID hammer what a trade war would mean. She DID hammer him on his record of failed and cheated businesses. And she did talk up her own, positive policy visions.
But nobody remembered or cared. The media didn't cover her positive policy speeches (see: that handy graph of email coverage vs. policy coverage), and any policy arguments she made in the debate were vastly outweighed by coverage of Trump saying he wouldn't accept election results or Trump denying he sexually assaulted anyone. All the outrageous shit is what lived in the news cycle. How does Hillary break through that?
She doesn't. She wasn't shiny enough. That's what it all comes down to. All is secondary to things that are shiny and chrome.