You're missing the point here, which is what could have very easily been. This will still be a useful device but had they just had more of an imagination and been a little more ambitious with it they could have made far more money from it than they will. This thing has no place to go. It is a static product with no potential for add-ons, upgrades or more games.
And if they had made a more sophisticated device, the price would have gone up considerably. Far more people would be turned off by a higher price than there are people interested in "add-ons, upgrades or more games". How can you say there would be "far more money" to be made?
I'm so very tired of the argument that "[Company] isn't making products that I like; therefore [company] is run by complete idiots who will run [company] into bankruptcy; I am so much smarter than anyone at [company]; I know this because I bought the last dozen releases by [company] and I hated all of them."
Imagine that, a genuine, new, classic Nintendo controller for that cheap.
Well, no, they're not "genuine, new, classic" since they'll have that Wii connector on the end of the cable and not the standard NES connector. And I very much doubt that making them NES-compatible will be a trivial operation, simply because electronics have changed a lot in thirty years, but I guess it isn't beyond the realm of possibility.
... But I guess that's why you're contemplating swapping in the original controller pcbs.