Lousy IEC Connections

Cable risers do NOTHING for poor design.
IEC connects WERE set up for snug rubber plugs and 14 ga. cable. Not plastic or machined metal plugs with stiffy garden hose.
Thanks for bringing this up, I wrap the plug with friction tape.

Uh, they support the cable, obviating the need for all this other stuff. That's not nothing. 

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.