While there likely wasn't much drama behind Moore's exit, the departure is notable given how much faith Alphabet had put in him -- he was supposed to be the ticket to making Project Loon more than just a noble experiment. Also, it comes roughly a month after Alphabet scaled back the number of balloons it needs for Project Loon to provide coverage. Moore's leaving and the strategy shift aren't necessarily connected, but it's apparent that he wasn't as crucial to Project Loon's launch as it first seemed. Whatever's going on, it's safe to presume that Alphabet would like a little more stability from here on out.