I don't get why you all blame HWR. This is SO easy.

Just because they made some messy eras in the past does not mean they are still bad.
They promoted C&GI (+ probably a high budget video) & HA (less than C&GI if I'm right but still), they sent the songs to radios, they did everything another label would have done.
It is NOT HWR's fault if C&GI/HA did not blew up (even tho they were still success at least in the US).
Problem has been out for a week, radios completely LOVE it (more than any Demi or Selena song) and it has just debuted with 438k copies.
Ariana became bigger when she literally had anything to justify it (4th biggest opening for a female single when the 3 others are Taylor, Katy & Gaga aka artists that had huge eras to pull out those sales...while Ariana sold about 430k copies of Yours Truly in the US).
No point with their labels. Just no, don't.