Producers actually don't have anything do with the loudness of the released track. The non-compressed master tracks they deliver have plenty of headroom, which the label will the master to their loudness standards. The loudness war has actually had a lot of minor victories for the dynamic side, the current situation is perhaps the best it's been in over 10 years.

Both spotify and youtube have implemented loudness algorithms that dial down the overall volume of the more compressed/limited tracks. This makes everything sound more or less as loud, but the more dynamic tracks that weren't as loud to begin with, will naturally sound better. Both platforms I believe use the standard of -14 LUFS atm (which correlates more or less to -14db RMS as well, for those more familiar with that). In comparison some of the worst loud trance tracks are about -5 LUFS and majority is about -9 LUFS. So -14 is great, but the EBU's R128 broadcast standard is -28 LUFS, so it's still far from that. But I think for released dance music something like -16 could be perfect.