Earlier quoted context omitted.
Why not since Bloomberg is now pulling numbers out of its ass? A billion MAU with projected $10 billion annual revenue gives a 10x annual revenue valuation. Apple has long surpassed a billion iOS units sold, and annual revenue is $230 billion, give or take, so it should be worth $2.3 trillion. Not bad for an inflation adjusted acquisition worth $654 million.
There are a lot of reasons why a fast growing business like Instagram should be trading at higher multiples than Apple. Also the value in NeXT came from Steve Jobs, not NeXT itself.
Taking a long-term view, IG's revenue comes from advertising i.e. it's a one-trick pony, just like Facebook. Apple is a diversified company; even though iPhone makes up >60% revenue, is anyone with an iota of financial sense going to complain that it's a bad thing?