Mass media firm Mediaset has been attempting to rid its business of the decaying Italian pay TV unit Mediaset Premium for years, most famously through the failed sale to Vivendi which resulted in a hostile share-grab. So, this week, the leading Italian broadcaster took matters into its own hands by shutting down DTT operations on Italy’s DTT network effective June 1 and opting OTT-only. In doing so, Mediaset has become a staunch advocate for OTT video in much the same manner we have come to associate European pay TV counterpart Sky, which of course tried to buy Mediaset, but more on that later. The move means Mediaset Premium channels will migrate to the six-year old streaming service Infinity. However, Infinity…