If samsung developed further its features samsung has already once invented, would it be as miraculous as ios' widgets, pip, 3Dtouch with quick action or peek and pop? all the features samsung had years ago: real widgets (not a poorly implemented so called widgets), flowing windows (=more than just a pip or splitview) and air command (=quick access) or airview (=similar to peek and pop).
Sorry but in this case, the other side already knows what features are out rather than praising "amazing" for non-functional and poorly implemented features..
And for sure Google should "vest" on android and use more time to develope apps working on that part rather than using the time with ios... But im quite sure they have interests to provide apps even for us too, luckily!
While bashing Google I dont see apple doing much for users who have also android and windows devices rather than living in a apple centric world. All i see apple has provided poorly functional icloud and itunes softwares on windows rather than making a real windows software starting from the gui and functionalities windows offers...
If google or microsoft were anything like apple, your whole ios experience would be 'welcome back to the stoneage' starting from the lack of beneficial and well working apps (like gmail, gmaps, gdrive, youtube, gearth, gcalender and office for ios for example).
And for the OP, works in safari:
http://ctrlq.org/youtube/pip/
Better than nothing. That works on my ipad but not on my iphone :/ just tried it on iphone but cant get it work.. Damn..