They know what they are doing. The whole point is to get you to use their cloud services. But now, if you are a Project Fi user, they are charging for data access to your own content you upload to Play Music.
So now I am back to managing music files on my device and changing them out and feeling like I jumped 10 years back to the past.
Right, which is why in every google app they give you the option to cache songs offline, and set your phone to only play streaming music while on wifi. They're TOTALLY trying to get you to spend more on data - which they make basically nothing off of. That's as ridiculous as saying they intentionally break android to have you buy a new phone to make the whopping .75 per handset.
So now I am back to managing music files on my device and changing them out and feeling like I jumped 10 years back to the past.