I bet you someone comes up with a fee-less POW based chain that doesn't centralise the mining. That'll be our little contest.
This sounds the same as someone coming up with a perpetual motion machine. "fee-less POW" probably breaks some fundamental laws of physics. I can't even finish an IQ test and see these things as obvious, cmon now. Maybe try again in a couple 100 years and we may have some mind blowing stuff which allows for very reduced fees at big volume transactions without compromising security and decentralization but certainly not "fee-less".