I've worked in in-flight entertainment (IFE). I can say that yes, the hardware is generally shared by multiple airlines. However most Tier-1 airlines will push for, and some will demand completely custom feature sets and UIs for their entertainment systems. The IFE business is about being able to say yes to what the airlines want now, and being able to predict what they want in the future, and delivering it on schedule. The most important (and backwards) thing is that the airlines drive the requirements for these systems, So if the airline says "it was just what was available" then that's false -- if they really didn't want a camera, there wouldn't be a camera. Period. There's a lot of other potential privacy related concerns with in-flight entertainment too. There's various ways to for the IFE system to be able to greet you (especially the premium seat customers) when you arrive and sit down, such as "Hello Mr. X, would you like to request your usual beverage before takeoff?". Know that the airlines want to track what you're watching too -- mostly in aggregate so they can keep the most popular stuff around, but I'm sure it won't take them long to try to personalize that for you too (because, clearly passengers want that, right?). The airlines are all about monetizing IFE systems, just like everything else about flying. Things like forced ads are the beginning. Personalizing the ads to you as a next step.
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I've worked in in-flight entertainment (IFE). I can say that yes, the hardware is generally shared by multiple airlines. However most Tier-1 airlines will push for, and some will demand completely custom feature sets and UIs for their entertainment systems. The IFE business is about being able to say yes to what the airlines want now, and being able to predict what they want in the future, and delivering it on schedule. The most important (and backwards) thing is that the airlines drive the requirements for these systems, So if the airline says "it was just what was available" then that's false -- if they really didn't want a camera, there wouldn't be a camera. Period. There's a lot of other potential privacy related concerns with in-flight entertainment too. There's various ways to for the IFE system to be able to greet you (especially the premium seat customers) when you arrive and sit down, such as "Hello Mr. X, would you like to request your usual beverage before takeoff?". Know that the airlines want to track what you're watching too -- mostly in aggregate so they can keep the most popular stuff around, but I'm sure it won't take them long to try to personalize that for you too (because, clearly passengers want that, right?). The airlines are all about monetizing IFE systems, just like everything else about flying. Things like forced ads are the beginning. Personalizing the ads to you as a next step.