Interesting assembling in this article, thanks. I think today Nikon might be more endangered than it ever was, and it is suffering from losing this pro position, though the D3 brought Nikon back to some extent.
Minolta was the leading AF-company first, with Screwdriver AF, Canons EOS did a longer time to start thei had troubles with the Ultrasonic lenses, Nikon tried to combine both worlds, but completely sucked when it came to fast in-lens AF motors, everyone was waiting for Ultrasonic motors and with a lot of delay NIkom came with the AFI-I design first (IIRC due to patent problems) and precious time was wasted until AF-S level was reached. Although Nikon invenrted VR Canon was faster and while Canon already had a complete Supertele line with VR nikon still only came up with the first 80--400 (with screwdriver AF). This list could be made longer.
That was the pro story. Whereas in recent days there was the "Big 2" story with Canon#1 and Nikon #2 it is easy to overlook that in the 1980s Nikon was leading the Pro sector but Canon and MInolta reigning the consumer market with Nikon sales coming behind.