Ever since we found out that Yamaha was only going to release Jorge Lorenzo from his contract to test at Valencia after the last race, but not at a private test at Jerez a week later, there has been much speculation as to the cause.

Had growing friction between the factory and Lorenzo led Yamaha to block the test? Was Yamaha afraid of just how competitive Lorenzo would be on the Ducati? Or, as the more conspiratorially inclined would have it, was this the invisible hand of Valentino Rossi at work?

The massed media had to wait until Motegi to find out. In the pre-event press conference, Jorge Lorenzo acknowledged that Yamaha had told him that the Jerez test was off the cards.

“Well, obviously I would like to make the Jerez test, but it is not a thing that depends on myself. For the moment, looks like I will test in Valencia. Looks like for Jerez, Yamaha is not so keen to permit that.” Lorenzo felt disappointed by the decision.

“I think that for the years we’ve spent together, and for the things we’ve won together, I deserve it. But obviously it doesn’t depend on myself and I will respect whatever decision Yamaha will make, because I am a Yamaha rider.”

Due to the large number of journalists asking to speak to Lin Jarvis to get his side of the story, Yamaha convened a press conference to allow the assembled media to ask questions.

In the space of half an hour, the Yamaha Motor Racing boss laid out in clear terms why the decision had been made. It was a masterclass in the underlying truth of MotoGP: this is a business, with millions of dollars involved, and a tangled web of interest beyond just Yamaha.

Yamaha has a duty to its shareholders and its sponsors to hold Lorenzo to the contract they both signed. Helping Lorenzo to try to beat Yamaha on a Ducati would be to fail their sponsors and Yamaha’s corporate interests.