Even on desktops, smaller keyboards are better ergonomically (because they allow you to put your mouse closer). Home, End, PgUp and PgDn can be accessed on mos

Even on desktops, smaller keyboards are better ergonomically (because they allow you to put your mouse closer). Home, End, PgUp and PgDn can be accessed on most (all?) compact keyboards as Fn+Left, Fn+Right, Fn+Up and Fn+Down. I use those very frequently, to me they're actually more convenient than dedicated keys (because Fn is near Ctrl, Alt and Shift, which are also used for cursor manipulation). I personally don't care for large ('inverted T') arrow keys, but there are certainly laptops (e.g. Lenovo's ThinkPad line) that offer large arrow keys if that's something you desire. And even back in the '80s there existed various keyboard layouts (PC, Macintosh, Sun).