Expensive accessories aren't a new thing this gen. Nor is loss-leading. Nor are hardware faults (see DRE) - and presumably as hardware becomes more complex there's more room for fault.
The point was that in order to make a console with that power all those years ago, there were a lot of sacrifices and simply thinking "Wii U is 300/350 and 360 was 300/400" is too broad a stroke.