Why do few laptops have their Home/Page Up/Page Down/End keys in a column on the right?

I'm noticing that the vast majority of laptops today have their Page Up and Page Down keys near (or on) the arrow keys, and the Home/End keys at the top-right (if not also on the arrow keys).

It seems hard to find a laptop like my old one -- my laptop from just a few years ago has a dedicated column of those keys on the right side, which is extremely handy since they're close to the arrow keys and require only 1 hand to operate, but aren't right next to the arrow keys, so wouldn't press them accidentally.

I'm confused what the benefit of placing those keys nere the bottom-right or top-right corner is.
Is there a UI reason behind it?