1080p was the same way. 1440p was almost exclusively an Apple thing. Monitor manufacturers want to sell size, not resolution.
I'm starting to wonder if vector formats and layout engines need pixel hinting capabilities, like font formats already do. As far as I'm aware browser engines already have to hack in these sorts of layout tweaks to avoid, say, float-based layouts collapsing into multiple lines at odd zoom percentages. Apple's insistence on integer scaling ratios is noble, but it also renders the display part of their hardware ecosystem an island.
