That sucks. Are you sure you weren't using iCloud library and need to enable it to download the music? Or perhaps iTunes by default doesn't show music in the cloud? Would be interested in your resolution, though I've not heard of this anywhere else.
UBER has sustained growth and momentum which provides access to capital so they can to pay win at the moment. The OP's article is contextual to a startup running out of cash (e.g. < 2 months) which happens because the startup hasn't sustained growth and investors are no longer interested.
They are sourced through various channels and job posts. They are typical every day consumers, which is great for many products but less so for SaaS and enterprise products.
It is powered by a distributed network of people but they're bolstered by a lot of software. This gives a very personalized experience while gaining the efficiency of software behind the scenes.