> And I find it hard do believe that a company managing 3000 Macs doesn’t use an MDM.

Oh my sweet summer child. Companies still rely on some Windows machines that are older than some people who can fucking vote.

Companies can be cheap and unless they absolutely need to manage 3k Macs with MDM then there's no need to invest the money in that effort.

You may be fooled into thinking "it doesn't take much to manage.." - until it's about 30 minutes worth of effort to go from beginning to push out to all devices and have it installed - it does take "much". Installing profiles alone takes a fair amount of work.

I've had IT managers keep excel fucking spreadsheets of users passwords in plain text.

If you find it "hard to believe a company managing 3k Macs doesn't use MDM" then you have not worked in the tech field long enough to see just how lazy or cheap companies can be.

I've worked from extremely intelligent and efficient companies to those I wouldn't feel comfortable with HR having any personal information from me.