There may all sorts of good reasons for why it has happened and why it isn't an evil conspiracy to pollute the minds of young people, but it misses the point, really.
Happily, I don't own a smartphone, but I think I would have been rather annoyed too. It's like being spammed or getting a huge wad of unwanted advertising in garish colours through the door - it's something you never asked for and wouldn't have wanted if you had been asked, it's simply inflicted on you and you now have to do something to get rid of the useless crap. At the root of this lies the feeling that you're not being given a choice, because your opinion doesn't matter, and whoever makes the decisions thinks you are just a mindless automaton who will go out and spend money on whatever the loudest advert tells you.
In the end, it's about respect: you show respect to earn respect. But if producers of eg. music don't respect their potential customers, why should people respect them back? Particularly, why respect the copyright they claim ownership of? I don't condone piracy, but I do understand where it comes from.