There are plenty of reasons. I switch during a commercial to news and when the game comes back on I just needed to hit swap. It was that easy (instead of randomly flipping back and forth.)
Also, when following two football games, I'd make them equal size and then zip off to the breaking action on one game while pushing the second game up in the corner and then a few seconds later I could swap back to the other game.
I used pip every single day.
Maybe it wasn't something that you used, but it is still a very useful feature. I'd much rather keep an eye on the game and watch another program on one big screen than watch a program while starring at my smartphone...
And yes, double play does work - it is just not intuitive nor as functional as the E* implementation (particularly because there is no pip.)
Like I said it's not useful, it's obnoxious. And it's not like I never used it before, I had two TV's with it, and I also had an UltimateTV box which had it. It was fun to play with, but it got old really fast because it was always in the way of something no matter where you put it.
Windows 8 is 100% software, yet it is going to cost a billion dollars to implement. You point is moot as resources cost money, period.
But I do find it interesting you are waging a vendetta against something you don't use, care about and claim costs nothing...
Uhm.. Ok, speaking of moot points.. Windows 8 is an operating system that is being written from the ground up by thousands of programmers involving millions of man-hours. PiP costs nothing because it isn't a big innovation, it's the same old code from 20 years ago. Every manufacturer had it, so it's not even like they have to pay a license fee or anything, they just have to dig into their dusty old archives.
Bottom line if it was something the TV buying public cared anything about, it would be in every TV on the market. But it's not, so it's not. And I'm not 'waging a vendetta', the OP asked a question, and I answered it.
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