I don't know how SoundCloud is managed and what their balance sheet looks like, but it's deeply unfortunate that a site that caters largely to up-and-coming musicians has so much trouble getting out of the red.
Presumably they're hurt by the presence of platforms such as Youtube or the 2010s' rebooted Myspace, where musicians can reach a larger audience and where both sides of the equation are subsidized by ads.
Meanwhile, more focused sites like Beatport appeared to have a successful recipe by selling actual tracks for download despite essentially offering unlimited streaming, yet even they ran into some trouble with their latest pivot.
It's a tough space to make money in, despite seemingly meeting a popular need.