Essentially, Foxconn thought that the Wisconsin deal would work more typically as its deals in China went. Glad-hand the government officials, get sweetheart deals on land and investment, and as long as you're not totally incompetent in making use of it, they won't care what you do with it, even if you fail to live up to the original promises. It's not clear to me that Foxconn actually seriously considered producing LCD screens here given this light; the announcement would have been more to make Walker and other government officials ecstatic about the deal than an actual commitment to follow through. The fact that outrage towards the deal would lead to Walker losing reelection and his successor keeping a much closer eye on performance (or lack thereof) seems to me to have caught Foxconn completely off-guard.
I think there's another level going here in relation to internal Foxconn politics, but my recollection is too hazy to make a coherent explanation, and I don't want to make any false accusations here, so I won't go into any more detail.
https://www.theverge.com/21507966/foxconn-empty-factories-wi...
Meanwhile, people at large don't follow progress of these endeavors. Some journalists may but there's selection bias from the journalist and the news consumer as to what they ultimately see and stay informed of. These stunts are forgotten by most (myself included) in the daily scramble of things we have to keep track of and manage. Did it fail? Did it succeed? Do I even remember it or just the emotion it attributed to something else I actually do remember?
Ambiguity hiding in complexity of daily life lets people say and do a lot of things and get away with it. It's often far too difficult and time consuming to unravel the ambiguity and complexity to show if something succeded, failed, or to even have cognitive capacity to keep track of. The end result, as you point out, is political capital people walk away with. The emotional impression at the time is what was sold and stuck to most people. "MAGA", "bringing back manufacturering", links to nostalgic economic golden eras for many workers.
Think about it from Foxconn's perspective, if you got a sweetheart deal and the person who gave it to you got canned for it, are you going to follow thru and put in billions of your dollars on the assumption that you'll still get billions of government subsidies in return?
There was quite a controversy over the environmental impact of this plant. The "word on the street" is that LCD manufacturing is a dirty industry requiring a lot of water.
https://www.theverge.com/21507966/foxconn-empty-factories-wi...
My take it was probably mainly a political stunt, lcd was never really possible (slump + wages + supply issues) and then they didn't know what to do.
The alternate take is that the whole deal was made in bad faith and FoxConn was hoping to collect subsidies and line its pockets. This version of events has some precedent[1]. It's especially hard to believe that FoxConn didn't know about US labor when this same situation played out in Pennsylvania in 2013[2].
[1] https://www.marketwatch.com/story/foxconns-history-of-broken...
[2] https://www.washingtonpost.com/business/economy/how-foxconns...
So that leaves either bad faith, or they are just abjectly incompetent. I can't really see any other options. Or, again, am I way off base?
Especially one that is a specialist in harvesting laborers from all corners of the world. I can only imagine selecting the right labor force has to be their main competences.
My smartphone will never be assembled in the US or Germany.
(No relation to the company, though I did once have a very nice chat with Todd Weaver).
And to the larger point: I agree completely that politicians opening their mouths about jobs (and also about anything else, IMO) is bad faith bullshit.
If you look from the outside, as a society we are using a lot of our best brains for very frivolous things. I wish for a more efficient way of using our minds!
edit I should add that I believe that spreading that kind of message has geopolitical implications, and that groups might want to create that image for strategic reasons.