I'm not trying to be flippant. I have noticed that many managers say no to anything they didn't think of first. Its made me usually default to thinking the manager is wrong unless the employee is adversely affecting another employee. If no one in the group could understand why they shouldn't keep those things, then it sounds like they weren't adversely affecting anyone
Edit: I should add that when I say management I mean management that is more than one level above the person who's behavior they are trying to change. People do t have as strong connections once it starts being a chain of relationships and you start losing the benefit of the doubt
Or potentially someone could get injured through corporate negligence (eg, if there is a fire and the software engineer sleeping under the desk gets burned; power goes out for 12 hours and someone with a fridge gets food poisoning).
Focusing on GP's comment specifically, if the government (local or higher) discovers that a premise is being used for habitation I imagine there are a whole bunch of rules that kick in that the company does not want to be involved with.
It is much cheaper, easier and more internally consistent to mandate that all employees have a standardised work space. Then not only do you cut your risk profile, you also might find opportunities for efficiencies elsewhere.
Compare personal risk profiles to a company. If I am a bit risk-prone maybe I tolerate a lifestyle where there is a 1 in 200 chance of a near-fatal accident each year each year (so I'm expecting to make it to old age with a near misses or two in life - I've met people who I judge to live to this level of risk). If you try that sort of approach with a company of 150 employees, in a given year you now expect:
1) More likely than not to have a near fatal accident in the workspace
2) To be imprisoned or have your business ended by the government for being a menace to your employees
Corporations can't tolerate risk at anywhere near the level individuals do; because they have to scale everything up to their entire workforce.
We had problems with people bringing knives in to de-core their apples. Every year there'd a nasty hand injury or two, and we were under pressure from upper management to keep our injury statistics low. Since hand injuries were one of our major problems; knife ban! :D
It was as effective as it was unpopular.
I was the manager, not someone a level above. I was responsible for space planning for my department. The offices weren't luxurious but they were decent hard wall offices where 4 of the 6 offices in each office bay had windows. Insisting that one should be allowed to take a seat in a window office for a cactus farm seemed very immature. I was also resonsible for assuring a reasonable attempt to adhere to health and safety rules. The unthinking objections to removing a fire hazard showed no appreciation for who would have hell to pay if something happened, even if only a mildly smokey electrical short.
How is it anymore of a fire hazard than anything else plugged into the electricity? I doubt you were rationing the electricity or unplugging everything at night, and if people had laptops they we're likely plugging things into and out of the sockets every day. People can see the obvious hypocrisy it poor reasoning and it makes them ignore or detest even reasonable requests from management because the requests are so frequently unreasonable.
If management had their way everyone would be completely standard, with no individuality or humanity because it would be cheaper and easier to deal with. The unthinking objections to every bit of personality or decoration of a space people are in for half their waking lives shows no appreciation for the mental toll it takes on employees