The logic of business would imply that a vendor of exploit code is going to make significantly more money reselling the exploit than the author of the exploit code. 100k for an exploit to the author? The exploit vendor will sell it for millions. Who has deep pockets enough that they are willing to buy exploit code for millions? A software vendor can engineers for many years for this cost.

Yeah, I don't like windows either, but its not the point. Billions rely on the security of Windows today, our entire global economy is dependent on reliability of our information systems.

One either helps maintain the security of our systems globally, or they seek to disrupt it for a pay day. I get quite upset when people enter with the mindset of 'the actual vendor wont pay me enough, ill sell it to shady exploit market'. It is not a simple pay day.