>>11492007
Like i said, if you have a bigger bookcase, you also increase the amount of shit you can do for 1:18. So now you can do this on your shelf, whereas you couldn't for 1:12.
Or you can put two vehicles chasing each other, which would be impossible for 1:12..

And 99% of bookcases aren't 15 inches deep, and not even 3 feet wide. They're like 10 or 11 and rarely get 2 feet wide (hence Kalllax's popularity, since they're bigger and not much more expensive).
And i agree, the square grids are dumb, but they are super common, hence a bazillion clones. And the closer you live to an Ikea, the density of kalax owners increases.
I actually own bookcases that are 18"x28", aka filing cabinets, because i wanted deep bookcases, since it allows me to store my DVDs/books AND also have a decent amount of space for displaying my action figures. Plus, i put oversized artooks that never fit in normal bookcases without sticking out. These bookcases needed their own room because of how much space they take up.