I could see that working for some people who couldn't cover the cost of a PC upfront as one reviewer pointed out.
My initial reaction is one of disgust, but this is true.
PC Gaming is expensive and only getting more and more expensive as time goes on.
I would never sign up for something like this, but if they do it ethically, I could support it for those who need it.
It all depends on what the breakeven point is between the subscription fee and the total cost of all the parts, and how soon they qualify for an upgrade.
Lets say a gaming system has a two year anticipated life span.
If they price it so the breakeven price point is 22 months (in other words what the customer pays in 22 months is the same as the cost of all of the parts) then NZXT gets to keep the next two months of subscription fees as profit, and then after month 24 they send trade in and send them an upgrade and the cycle starts over, then this isn't too bad.
If - on the other hand - they gouge the **** out of them on the subscription fee, and keep them paying in perpetuity for an increasingly obsolete system, then they can **** right off.
The devil is in the details.