Of course companies who are doing well can also afford to pay more and give all sorts of perks to their employees.
I suspect often that is the actual causation, not vice versa. People like to point at successful companies and say "see, if you would treat your employees like that, you would be just as successful". That seems a bit silly.
But assuming the best intent is just plain ahistorical. We’re only a century out from when companies routinely hired armed security services to threaten and ultimately murder people organizing to get their share of what wealth they created. That’s widely understood to be excessive now and those of us in privileged career positions take that for granted, but I think it’s worth remembering that some people still have that to survive and most of the rest of us are navigating a kinder gentler version.
To be honest that sounds to me as if those people "organized" to take by force what they thought they deserved. In that case, hiring security for defense seems justified.
But you mention causation. You have to treat your employees well if you want to be successful. It is necessary, but not sufficient.
Taking an extreme example, soldiers at war. Are they generally being treated well? I'm not sure they are, and I don't necessarily mean deliberately. I don't think generals want their soldiers to be killed, in general. It just happens that situations arise where there is struggle and soldiers get killed.
I remember complaints about CD Projekt Red (makers of Cyberpunk 2077) who had to ask for death marches despite of initial promises to ever do so. I don't think they liked doing that, but presumably the business situation made it necessary.
So instead they decided to crunch and deliver a buggy game with the result that other people were so disappointed that they didn’t buy it.
I don’t know which is the bigger group, but I wish they would have delayed it.
So the pressure to deliver sooner rather than later also directly benefited the employees financially, even if it negatively affected their time and work/life balance.