Really depends on what you're going for with your day to day work and how that will progress over 5 to 7 year timeline.
I'm a graphic designer of twenty plus years and a professional printer of seventeen years (the latter being what I do day to day). Mac was always for creatives, what really pushed Apple computers into everyones home was the iPod and following the iPhone, the iPhone being the big push.
Mac OS for my creative work is what I find to be more productive. I run our print shop solely on Mac computers. It's stable and I have little to no problems (besides the updates that tend to nuke presets with printer drivers).
I see you want a computer to work with video editing. My best friend of thirty six years just started with motion graphics a couple years back since he switch direction with his graphic design career. He bought one of the top tier Mac Studios (cost him a little less than $9K). He has created quite a few full on 3D advertisements and motion graphics videos, that can take him 8/10 hours to render out scenes. He has been considering buying a decked out PC to do his motion graphics work to make it more streamlined and a little faster to render his videos.
I from a personal stand point would say Mac, they're more costly, but I will tell you over the last twenty one years of owning and using them, I've had all but one crash on me and that was due to a faulty HDD that failed after four years of constant day to day use in our shop. I tend to get 5/6 years out of them before they truly show their age.
Also, to add this, I bought a PC back in 2014, thinking I would use it for some work along with games I wanted to play that were only on PC. Well it was only used for gaming, since I found using a work computer for gaming is distracting and I was thinking about how I just wanted to play a game instead of working. It was also used with a much older large format scanner that no longer worked with Mac's due to a SCSI cable that was its main connector.
