Back in the olden days, recordings used to be off just a bit. Sometimes more than a bit. The rate at which the platter rotated on when the Music was cut into the wax or whatever might be exactly 78rpm. Then the record was made, and was sold to the listener who put it on the home victrola. There was a lever one could use to speed up or slow down the rotation speed. Sometimes I wish there were something like that now.
Imagine how off the records could be when the early record companies worked out of homes & garages in the 50's & 60's.
I recall that the Beatles early songs were recorded on Capital records-hi fi! -in the USA, but the pitch was often "between the cracks." A friend of mine who had perfect pitch used to go crazy. I still remember those old Beatles songs "in the between the cracks keys" to this day.
There is absolutely no excuse for the key to be incorrect on cd's or dvd's or on film in this day of high tech!
Now I suppose we're going to have to argue the merits of whether pitch in one spot of the globe or another is correct.