Earlier quoted context omitted.
It was the norm. I wonder if the HN population is young enough to have not seen them.
Service manuals being free was the norm? I had to pay for the one for my Japanese motorcycle from 1982 and on every other vehicle I've owned, unless you mean bootlegging on car forums. I don't know anyone who's gotten free service manuals direct from the manufacturer.
There might still be automotive service manual torrents floating around with content which was partially a result of my efforts when I was in the "bookz scene" over 2 decades ago.