Why no PiP?

I know this has been asked before but it's worth asking again. Why doesn't DirecTV Stream offer picture in picture and/or multi-view? Every other service has it and they are losing customers because they fail to offer it.

It should also be made available on Android so that TV stays running in a floating window while I do other things on my phone. 

I've been with DirecTV for almost twenty years and I think DTVS is the best streaming service but even I am tempted to go to YouTube TV because of these missing features.