Okay, your contention is that the people making these transgenic nematodes make lots of money selling them to farmers for pest control. I'll say that may be so.
Now compare the revenues from one of many forms of pest control to the revenues for just one lifesaving drug. There's no comparison! If big money favors revealing the disease over concealing the disease, the disease will be revealed.
Nice theory, the problem is that once this gets out, and it's coming, the bio-tech industry id DEAD. Releasing a world wide uncurable plague ain't going to go over well. There is literally NO REGULATION on releasing these transgenic species, and the bio-tech path is the future of the world economy. No, you are wrong, there is everything to lose and nothing to gain. Soon Frankenstien will be revealed, there is a change of direction coming ...