I work for a very educated man who uses long paragraphs and run-on sentences. But, his are gramatically correct. There is a way to do it.
I agree that those old books are obtuse and can put someone to sleep. But, they can't get away with that now. This is the age of illiteracy. Today, they have to make the books concise and easy to read or people will toss them. Education in this country has been watered down for several decades with the subject of English and grammar having taken the biggest brunt. The results are visible everywhere. Also, take into account that people simply do not have the TIME to pore over endless psycho-babble.