This is not the fault of the hardware, it's the fault of the software. I want more screen space, and I'm not asking for a square laptop and I'm not wanting my screen any taller than it is.
Browsers should optimize for vertical space and let you reuse your horizontal space. Tree-style or vertical tabs are perfect for this. But for some reason, all browser vendors follow each other, don't build alternative options (or count on the community to do it if they even allow that), and presume they have got it right with tabs on the top. It's like browsers have become so hard to build and maintain by the big four that having more than one way to view things is disallowed or relegated to extensions. I've said it before, I want my browser like my IDE. I want to move and dock windows in a MDI, and I want to move around the web like a power user. Yet we're all subject to the lowest common denominator of users because, I suppose, maintaining more than one UI paradigm is too difficult and they've all settled on the best apparently.