They work great, unless the installing contractor doesn't mount it properly, and the whole fan assembly comes loose and falls 28 feet down onto the area where your shipping and receiving employees work...
I have a customer that I recommended Big Ass Fans to that had that happen. Fortunately it happened over night, so no employees were present, just a bunch of expensive aircraft parts.
The security video, and pictures of the aftermath, were horrifying in light of the fact that about 15 people work in the caged in area it fell into...
The place now has a bunch of roll around VFD driven fans, no overhead fans.
If more government is the answer, then it's a really stupid question.
Wal-mart has 3 in the garden center here. They removed the logos from the fan hubs, but the control panels are labeled BA Fan 1, BA Fan 2... They work well but the drives are noisy -- that high pitched wine.
The Ikea store near me has some of these in their self serve warehouse area. I remember staring at them as I walked around the last time I was there. They even said "Big Ass Fan" right in the middle of them, which I thought was funny. I guess Ikea has more of a sense of humor/tolerance level than Wal-Mart does.