I understand what you mean, but a survey of the previous lawsuits muddles this line of thinking. Kubota has heavily discounted ROPS available through their dealers for US market tractors only. Even the
B6000, sold in identical trim in both markets, is only eligible for ROPS purchases if the serial number is a US market iteration. If you have a grey
B6000, they won't sell you the ROPS.
"Yanmar America is correct that it owed no duty to Mr. Slater...Yanmar America had nothing to do with the design, manufacturiYanmar would disagree with this. From the above cited case:"According to Yanmar America, each company had a separate interest in discouraging the sale of gray market tractors...Yanmar America wanted to protect the brand, and its profits..."{/QUOTE]
First, Kubota and ROPS. In most cases if an OEM offers a safety item item at a heavy discount like you've described it's probably due to a settlement, either civil or a govt case. The legal system treats this as Kubota effectively admitting that they knew the risk, therefore responsible, but have attempted to rectify it by offering the discounted fix. This will often limit, or remove, future liability in similar cases. The reason they will not sell the ROPS for grey models, similar or not, is because that would then, in the legal system, pull all those tractors into Kubota's liability "pool".
As far as the Yanmar case is concerned, a few things: 1) That is an appeal of a case that Yanmar initially lost (jury case if I read correctly). That means that Yanmar has spent a lot of $$$ defending themselves against the type of suits we've been discussing. They just won it Feb. of this year, so the current suit would have been in the works before they knew the verdict. The new suit could be doubling down or hedging a potential loss of the appeal. 2) "Profits" often carries both future and past meaning. 3) The original case started prior to Yanmar re-entering the market under Yanmar America. It will be much harder going forward defending themselves since the common juror will have a lot more difficulty distinguishing between Yanmar Japan/Yanmar America and Yanmar Japan/Cub Cadet by Yanmar. Obviously the jury in the initial case didn't see a difference.
I think you nailed it on the head in the part about the Zen-Noh name. I do believe that Yanmar and Kubota are trying to make the importing the greys illegal. However, if you look at the numbers of new compacts sold verses the impact of the grey market, I would still say the profit protecting is from potential loses incurred in the legal system.