Well think about it -- anytime I proposed something related to Open-Transactions, I eventually ended up having to code it myself, too.
Therefore I believe the same is true of Satoshi: he proposed some great idea, and no one did anything with it, so eventually he just coded it himself. Who else would be more likely to have done so, other than "himself" ? In my own experience, that's the way it goes.
Reality is the ultimate arbiter of who is wrong and who is right. All the great inventions were not made by governments but single individuals free of coercion or the repression of being a wage slave; Edison, Tesla, Einstein, graham bell and others, they though selflessly, where the rest of the market was thinking of how to make money off the competitor, Satoshi was thinking: Fight them where they aren't and so too did these science greats.
Alexander Graham Bell worked with the deaf.
Einstein worked on changing the understanding of physics.
Tesla wished to help the world by giving them free electricity.
Edison worked on improving the state of society.
Gutenberg created a press to democratize access to the bible.
The idea for a Genius is freedom, and Genius is seldom understood so it leaves them no choice but to create the change in the world they wish to see themselves; No one understands them or can even accept them and worse they come to despise their incessant chatter which they have no interest in, why would they tolerate them when they are not tolerated by them? So the Genius sets about on their lonely errand free of the constraints of society: money, influence, power... acceptance, they create whatever they want, without anyone telling them it's not possible; Reality will be the arbiter of that.
People are afraid, the Genius is not afraid, society condemns them, their governments and institutions condemn them but they create freely regardless of imaginary or real consequences of poverty, isolation, loneliness, violence brought on by those in power to decide their fate.
They create ceaselessly and in shifts, thinking not as some, of where their next meal will come from or will they get laid tonight; The Geniuses mind is contemplating the Universe, Reality, the construction of poems and sonatas; oh how they dazzle their minds, and of systems and logic. They make the world a better place because they are still human and yet have made a unspoken vow to forgo the world so they can solve these problems that no one wishes to solve because they are too entrenched in their job, worried about money, what other people think, drowning their fears in drugs and alcohol or simply content never having found out what life truly is.
Satoshi's idea was an old one, they simply put it together and took all the steps to guarantee it's success. I can see it now, in how it has survived all these years. Satoshi's Genius was in the payload, Arming this digital nuke to the brim with the most well thought out ideas of the past hundreds of years with a delivery system akin to a ICBM with multiple warheads to spread the mayhem smoothly and evenly.
Satoshi knew where all the gate keepers were and bypassed them, made sure that they would be outmatched and unable to stop it once it had planted itself in their territory. This is why these great ideas never happen, because of the gatekeepers, they control all the doors they have all the keys and their lines of power are well known.
how did this idea get through? If the gatekeepers cannot understand the idea they cannot see it, if they are overwhelmed they cannot stop it once they identify it, If it is outside their lines of power they cannot block it, If they do not have enough resources they cannot defend against an onslaught from a million fronts: death by a thousand cuts.
Satoshi never revealed themselves: no attack against it's creator is possible, they cannot be tied up in the courts by corporate interests.
The client is open source: it is available to everyone to use and create their own projects with; it can be cloned into hundreds of different projects that no one knows where they are.
It is distributed, no single attack against the network is possible, only parts of the system can be shut down and those nodes will be repaired once brought back online.
The users are anonymous they cannot be attacked and made an example of.
The BlockChain is 100% open as well all transactions are recorded, anyone who has a copy can restart the network on their own and if necessary use it to gauge the health of the ecosystem, all this information about the network is able to be used by all. If the majority of users are not actively attacking the system they will take this information and attack those who are not working in it's best interest. an attack from within is very difficult to succeed.
The system is monetized so it will spread extremely rapidly it cannot be slowed down to deal a restriction attack, people will open the gates to gain access to that prize.
Bitcoin is a program it cannot be sued, bribed, corrupted in anyway, it is not political, it is objective and consistent at all times and holds no allegiances.