Dire Bare
Legend
I don't really remember what video it was, but for one of the Q&A for his magazine Arcadia, Matt Colville spoke on why a print magazine for his product is unfeasible, and even why WotC likely would never do one again too.
That said, I don't know why White Dwarf is profitable. That magazine has been running largely uninterrupted since the 1980s with a fairly dedicated readership, which would be unlike a D&D magazine which would have to start an audience from the ground up. They might be able to pull it off but I find it unlikely that WotC would try.
White Dwarf is a very different beast from Dragon Magazine. Also, while clearly Games Workshop feels that continuing the magazine is worthwhile, for now, how much profit do they make on the magazine? Is it a loss leader? It wasn't all that long ago that GW was doing some pretty significant experiments with the format of WD, so things haven't been all roses all the time for their infamous house organ.Can you link to or explain why a print version of Dragon Magazine isn't possible? Because I have near my desk a copy of White Dwarf and I'm wondering why WotC can't do it if GW can at $9 an issue.
Every article I've read on the topic of print media says that general interest magazines are losing subscribers and advertising but niche magazines (which is what Dragon Magazine would be) are doing very well. It's still a $22.9 billion industry.
White Dwarf does do a pretty good job (currently) of showcasing the Warhammer hobby and does provide new gaming content, lore content, and advice content each month. But, while Warhammer certainly has a robust online fan community, it doesn't have a D&D Beyond or DMsGuild.com to support the game(s).