TL;DR: it's not always "them", there are also those working for "them", who might have no say in the matter.
cannot resist to reply to nitpicks :-)
counterexample: let's imagine I'm an employee of a company which has a policy that forbids me from using any AGPL software for work and it also forbids to install said software on my corporate laptop at all (even if it was for personal evaluation or toy projects) or else, if caught, I might incur in disciplinary action, who knows, possibly termination.
I guess that in this case you'll agree with me that the statement "some people cannot use it" is not quite false and especially not completely false, in that , yes, I could use it (as in no physical law forbids me), and even if you might say that it's me who freely chooses to not use it in order to avoid the repercussions I don't really think I have a choice here, do I?
This is an extremely pedantic definition of "some people". As employees of the company doing work on their corporate laptop they can't do it, but that is because the company won't do it, and they are employees of the company.
Also: you shouldn't be using your company laptop for persona projects anyway... get your own laptop :/. So, likewise: "people who by premise are already doing something sketchy because they can't afford their own laptop and are pretending to borrow one under employment terms" is just an awkward place to start to define a reasonable, as opposed to pedantic, definition of "people".
A lot has been told about those cool companies that hire creative people that love to play with technology. A lot has been said about how some weekend projects have turned up in useful things to be used within the company, sometimes even major projects.
Such a passionate developer however might find himself in a situation where she's not allowed to use some tool X because of a restriction put up by his employer.
That restriction might be a minor annoyance, e.g. raise the barrier to entry because "doh, I need to go and grab my personal laptop for that? nah, let me use something else". Or it might be a deal breaker: I need to get some job done, I'd like to play with tool Y, use it to get the job done and learn new thins while doing it.
This kind of people, those passionate developers, will complain about that.
They will complain to their employee for putting up such a restriction (and you'll usually not hear about those complains here).
But they will also complain about why the tool Y has chosen a license that his employer find so problematic.
These people will not just stop complaining just because they shouldn't be wanting to play with things in the first place. That's what they do, and that's often why they are good at doing things.
People do complain when they have too many rules that hinder their ability to do stuff effectively. I do see that happening, quite a lot; and I can understand why and relate to it.
Do they have the right to complain? Well, that's another story.
If the tool is closed source and they don't want to buy a license, then sure they can complain but they will just shrug it off as "that's the way it is" and move on.
I believe that things start to be more blurred when you have an open-source tool, which suddenly you cannot use (I'm not saying extend and sell commercially as closed source!) just because of FUD around licensing.
That's a nonsense definition. In general language it's perfectly reasonable to say things like "vegans can't each chicken". Responding "FALSE! They can, but they choose not too!" doesn't add anything.
That's completely false: anyone has the right to use it, for any purpose; that's what Freedom Zero is all about.
Some people do not want to both use it and also comply with its terms, but that is their choice; they can and may use it, but choose not to.