Sketchy large employers like G4S responded by setting up tens of thousands of "Mini umbrella companies" [1] with directors in the Philippines, each company employing only a handful of people - allowing G4S to benefit from the £4,000 discount tens of thousands of times.
Sadly, exempting small operations from regulation isn't a simple matter.
Complex corporate structures enable plausible deniability. The CEO of GFS probably didn't know what was happening, but also probably didn't want to know whilst enjoying the low fees charged from the recruiters.
It's literally managements job to be aware.
Imagine if a crossing guard waves cars through an intersection as children crossed and goes "Well, you know, I wasn't driving the car".
There has not been regulation for online forums for forty years and Earth did not explode or human kind did not end.
The famed section 230, passed in 1996, is an update to a section of the 1934 Communications Act, which is but one set of laws regulating many aspects of forums. Lawsuits in the early 90s led Congress to modify, but not abolish, the stack of laws regarding all communications technology.
Now that you know but 2 of the many laws affecting online forums, you can dig up plenty more yourself.
But how about Trump winning popular vote? Millions of people are sure this is about as bad as explosion of the Earth or ending of the humankind.
As an example of impacts not necessarily correlated with size, a comms platform for, say, the banking or finance communities, or defence and military systems, would likely have stronger concerns than one discussing the finer points of knitting and tea.
It almost always doesn't, because the big guys have lobbyists and the small guys don't.
The big guys would rather not have to comply with these rules, but typically their take is, well, if we're going to have to anyway, let's at least make it an opportunity to drive out some of the scrappy competition and claim the whole pie for ourselves.