Google Wipeout on 9/27-9/30 - 85% Drop in G Traffic

For reasons I will never likely understand we still appear to be ranking near the top for a lot of our terms but Google traffic began about an 85% drop starting 2 days ago.

Nothing has changed, we play 100% within the Google rules. What we do see is that numerous competitors have launched brandxyzstore.com and are now appearing in the SERPs. In particular one competitor launched 4-5 sites targeting brandxyzcategorybstore.com brandxyzcategoryastore.com etc and they're apparently gobbling up the rankings?

We played within the rules as outlined and appear to have been beated out by the cheaters. Nice guys do finish last.

There's no errors in WMT or anything like that, all looks great. No changes etc.