QUOTE
You don't want that. It is like when you start cheating in a computer game. With the challenge gone, it gets really old really fast.
Don't worry, wasn't planning on using it for gaming ;P
re: Crimson
Don't get me wrong, I never said it's IMPOSSIBLE, nor am I saying you're a bad GM. If your players are having fun, you've succeeded. However, in the Shadowrun world, it is extremely, extremely unlikely without the proper moving and shaking (and then it's only extremely unlikely).
Let's take some examples. Selling equipment to the Tir (I assume to the Tir military specifically, I'm assuming).
The Tir is a very paranoid, very self-contained, very picky nation. They don't just go out on the open market and see who is selling. It's all about politics - and politics with a group of immortal elves and elves who think they're immortal at that. If there is a reason they would not buy from you, they won't. You're not Elven? Off you go. Not nobility or related to nobility? Operating out of one of our historical enemies? Are your weapons anything less than SOTA? Are they aesthetically pleasing? And of course, can they compete with our current supplier who has been doing this for twenty years, has relatives in the court, who has a very exclusive clientele (us), and who has offered us a generous service package?
Now, being a Shadowrunner, your PCs may be able to overcome some of these hurdles. The council is what, ten people? So if you get blackmail on seven of them, you should have a vote strong enough to get your company chosen (and now you just have to deal with seven Tir councilmembers who either want your company to fail due to other causes, or who want you to be dead). That's pretty exciting. Or maybe you attack the current supplier directly, maybe by discretely replacing key members with dopplegangers. I don't know. But needless to say, this step is *extremely* difficult. You don't just buy a $1M facility in the boonies of Louisiana and send a nice e-mail offering 1 free gun when you buy 10, otherwise Ares would have already done that through an intermediary. Selling to Lone Star would actually be tougher, because there's more focus on the bottom line, which the PCs can't meet while being profitable. That might just come down to having more dirt on your supplier than the other companies do (and having more dirt on a steel supplier than Ares does might be difficult).
At some point, you're going to piss someone off enough to bring the hammer down, and when I mean someone, I mean people like Ares, Tir council members, or Lofwyr. People who have five ways to Sunday to shut you down, some involving very, very many lawyers. And this is all step 1.
Moving on to one of the later steps, refitting the HMHVV virus. Yes, if you manage to successfully modify the HMHVV virus you will make a LOT of money (until the information is stolen). The reason why no one else has done it is because it's extremely hard. So this will be something broken into a series of tasks. Some would be biotech tests, physiology tests, thaumaturgy tests, etc., with TNs ranging from 6 (get a sample) to around 120 or 140, with a threshold of 200 successes (determine the active gene sequence for magical sensitivity). This modifier is reduced by things like the number of delta-level labs you have available, the number of scientists working on it and so on. These are mega-corp level tasks. It's definitely not something you can say 'this will be solved in 2 years', because people said that 40-60 years ago, and it's still not solved. In regards to 'huge technical advancements', I'd say you have better odds inventing a nanofabricator or a warp drive than you do of unlocking HMHVV to that degree of understanding. At least no one has been working on nanofabricators really, so you don't know how difficult it might truly be. Maybe it's easy

But again, this comes down to what your party enjoys playing. If you like playing the conspiracy thing, go for it! It looks like a hoot. But if you're trying to play a vanilla shadowrun game and your player comes out and wants to do something crazy profitable like this, the first question should be 'why hasn't it been done already'. Oftentimes the answer is because it is mind-numbingly difficult, to the point that 200 scientists locked in a room with the best equipment haven't solved it after forty years (we know because we've tried). Sometimes there are other reasons (politics, bribes, dragons, whatever). All of these are open to creative PCs putting their hoops on the line to circumvent those odds, but for some challenges the solution is going to have to be awfully creative.