In Poland there is this weird contest of making books largest possible. Mandatory points are huge font, enormous margins, huge spaces between paragraphs and chapters always starting from new page. Preferably with some graphic on half of such starting page. Magnified if it's a children's book. Also polish stylistics use new line for each character speaking so short conversations can take many lines.
It is shocking when you take same book released in UK or US. It looks like at least cut in HALF and actually much easier to read.
Meanwhile there are "pocket" editions that are on the small side, but better.
The only positive excuse i can find is that publishers consider that the majority of their readers would be older and with poor vision, so bigger books.
One thing I appreciate in portuguese books is the font size. All the books I order from the UK have a smaller font than what I'd want to read after work.
I don't think the rest changes.
Both German and French have longer words statistically, so a translation of e.g. a 500 page English book might result in 650-700 pages after translation. Now publishers have to ponder the question wether that's still a "handy" book or if they should split it into two.
And now happens, what we see: books with 300-350 pages look a bit small, so they increase the font size, expand the whitespace and, voila: two "decent" sized books where they "accidentally" increased their revenue too, because they can sell two books.
That's pretty much universal in modern English books, too, and I've seen it given as a rule in several places.
I'm not sure about other languages and other times, but first editions of Kafka definitely have some long paragraphs: https://de.wikisource.org/wiki/Der_Prozess/1._Kapitel
I'm a bit of Philip K. Dick fan and have "A Scanner Darkly" in two languages. Polish version is 150 pages more, an inch wider and an inch taller in size. Not that PKD elaborate language would justify more flourish translation, he was very "straight to the point". It's such a waste.