BT Sport’s price hike of up to £48 ($63) a year, or 67% on its standard package, marks the end of a prolonged honeymoon for its subscribers but could also signal the start of its own decline. It also highlights the faultlines starting to appear in live sports broadcasting globally as the specter of league and event organizers going direct to the consumer (D2C) looms larger. BT Sport kicked off in 2013 after acquiring a package for 38 English Premier League matches for the 2013/2014 season, or one match per round of fixtures, leaving its competitor Sky with a much bigger package. It then secured a major if expensive coup by beating Sky to the prestigious European Champions League and…