Whoa, seriously? Put your self in their shoes. You design something, you license it, you sell it, someone else tweaks it a bit, and then they sell many more of it. Now I know many Internet forum members like to say they're exceedingly noble and would think having their work pilfered was a compliment but in the real world that tends not to be how things are perceived. What if a year from now Yamato did want to revisit the fan jet and produce something else? Here Yamato had gone through the approval with Big West and made the appropriate concessions only to have other unlicensed people profit largely from their work... that doesn't tend to make business people happy. The question is, would they be making money from something that they had the rights to make but was being produced by someone else? If the answer is "no" then they're not happy.
All that said, I get that Valk009 was essentially joking around (while putting out an idea many folks would be happy with).