Jay Z's music streaming service, Tidal, has had a rocky few months since he bought it for $56 million in March. For Tidal, traction has been hard to come by. And now some 71% of top music executives have lost faith in the streaming service, saying they believe the company will fold in a year or less, Billboard reports. The company’s valuation spiked to a reported $250 just a month after Jay Z acquired it, but his efforts to brand it as an artists’ platform seem to have largely failed to move the public. An impressive roster of artists has joined Jay Z in supporting Tidal, including big names like Coldplay, Daft Punk, Alicia Keys, Calvin Harris, Madonna, Usher, and Rihanna. But having blockbuster artists on your side doesn’t mean you are friendly those who aren’t superstars — or can convince people that you are. Adding to Jay Z’s woes has been the public’s seeming apathy toward Tidal’s original prime selling point: high-fidelity au...