Teva’s thrice-weekly Copaxone will be reviewed under an NDA. If approved, it could cannibalize some of the market for regular Copaxone, including the generic versions; however, thrice-weekly Copaxone will require an explicit prescription and won’t be substitutable for an Rx written for regular Copaxone.
I don't have an answer for the question in your second paragraph.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”