Sure, as long as they are doing so in good faith. An act like this is clearly not in any sort of good-faith attempt to be in compliance with the law. It's obviously illegal. I would expect (hope?) that regulators and law enforcement would act swiftly and with much more than strongly worded letters and small fines for anyone who does this.

Yes, you are correct that I would definitely claim that this was an egregious action. If people are conspiring to limit the employment prospects and potential income of others and are doing so in a manner that violates the law - yeah that's pretty f'ed in my book and they should, in my opinion, be subject to the harshest punishment the law allows for these instances.