Lousy IEC Connections

And if you want you can go extreme.
https://www.furutech.com/2017/10/11/15603/

Supporting the cable does NOT "obviate" anything. Unless your rig is laying around in the floor collecting dust, never touched. An actual solution would be for some genius to invent a locking plug that accepts 8-12 awg wire.

https://www.amazon.com/Rewireable-IEC320-C13-Accidental-Unplugging-Disconnections/dp/B01DCFVXKK/ref=...

Fuzz- I debated whether or not to reply to you, but decided that I should.  There are some companies (Audience and Synergistic Research) that do use twist lock connectors on their power conditioners.  Trying to get hundreds of manufacturers to agree to use a different connector than they currently use is not only an uphill struggle- it is climbing Mount Everest in a blizzard.  Just not gonna happen.  There ARE some solutions for you- friction tape on the outside of the IEC to make it fit snugly costs very little and is very effective.  If your power cords pull out of the wall, rotate the duplex 180 degrees and have the ground hole at the top.  Two very quick, inexpensive solutions that should work for you and satisfy the urge to complain further.

Something has changed w/ the IEC's imo.  And my guess is that these hundreds of manufacturers have expanded their acceptabe tolerance levels on IEC's so that they do not have to reject the thousands of plugs that they purchase.  It is an easy fix.  Hold the plug manufacturers feet to the fire and have them supply plugs that provide a snug fit.  They all want to yap about how great their wire is and then put a sloppy connector on it.  Follow the money.

Yes, this is an issue, and there are easy fixes for. My greatest issue with pc's is having iec into equipment being at all manner of placement. Grounds may be top, bottom, right or left, often have to twist stiff pc which pulls equipment off specialized footers. As a result, I now only use more pliable pcs.