Comment 3 for bug 992872

This bug report is invalid, because USC already presents licenses that you need to accept before installation.

It is not necessary to read or accept a redistribution license just to use software. The GPLv3, for example, is explicit about this in section 9: "You are not required to accept this License in order to receive or run a copy of the Program." (If this wasn't the case, Juju and other software that automates software installation would frequently be stuck waiting for user input.)

You are thinking of end-user license agreements. Software in the official Ubuntu repositories seldom has an EULA, presumably because this would conflict with section 7 of the Debian Free Software Guidelines. Software in MyApps can have an EULA; when it does, this is presented during the payment process (see bug 781044).