This is why I have a strong preference for free software that is available for the dominant three operating systems. Only if free software doesn't satisfy my needs I look for nonfree software and then I first look for commercial software which supports free operating systems. If all that fails, it's time for a Windows 7-VM to run that program.
I'm only one customer but I'm letting Microsoft know that I'm not happy with the way they go with Windows by not using Windows 10.
I have a strong preference for using the best software available to me. IMHO, all of the major operating systems are good enough although none are perfect.
These days, hardware and software is very inexpensive compared to time. I love the idea behind free software, but sometimes it's just too expensive to choose.
The "best" depends on the context. I don't want to argue what's best for you.
In the university context I've found that there is a lot of free software that works good enough or sometimes even better than commercial products. If you factor in that you still can use that particular program after you leave, it becomes a big plus.
That's very true. For example, if I need to use an image editor, Photoshop is the only thing I would consider. It's inexpensive ($35 for a month subscription), but more importantly it's easy to hire people that know it well. It's also well supported and documented.
I'm only one customer but I'm letting Microsoft know that I'm not happy with the way they go with Windows by not using Windows 10.