Great analogy, the flaw is that it's not NintendoCoins but RareWareCoins and BlizzardCoins that are needed to operate the machine. Figuring out how to make the Nintendo machine use coins hasn't worked because people always jailbreak the Nintendo for access to the subscription game services they run on it. What is Nintendo to do in this situation?
Nintendo has to make sure that the primary coin used for resources on their cloud is the Nintendo coin. To do this it would be similar to how in Ethereum you have to buy Ethers, and in the Master protocol you have to buy Mastercoin tokens. If there are two tokens then the primary token is still the Nintendo token and all other tokens would have to be measured in Nintendo tokens as the measure of value.
Whether or not it's going to work like the analogy is something no one can know because we don't know what decisions the human beings in charge of the design will make. If they make decisions based around ideology rather than rationality, then they might get the economics wrong. If they focus on success more than on ideology then its more likely they can be profitable.
For example the reason to produce the platform might be ideological. To provide privacy, to provide decentralized cloud storage, to provide incentive to decentralize the Internet. These are all very noble goals. Unfortunately having noble goals doesn't always translate into success because often to reach success ideology has to be set aside for what works in practice, according to science, and sometimes it's very counter intuitive.
For example it might require some centralization for things to scale. Of course it's not ideologically acceptable to have centralization. What decision will be made? To follow ideology or go for the sure profit? Ideologically driven organizations can be successful when they put profit ahead of ideology, but when they put ideology ahead of profit it can cause the entire business to fall under.
I don't know what decisions will be made. I do think it's possible to take a very scientific ideologically agnostic approach (ends justify the means) and make a very profitable DAC out of MaidSafe. I don't know whether it's possible to do that and keep it decentralized.
-edit-If we think of resources like we think of land, and if you're familiar with geolibertarianism or Georgism, then the Safecoins can be used to tax consumers on the use of resources (land).
https://en.wikipedia.org/wiki/GeolibertarianismGeolibertarians consider land to be the common property of all humankind. They say that private property is derived from an individual's right to the fruits of their labor. Since land was not created by anyone's labor, it cannot be rightfully owned. Thus, geolibertarians recognize a right to secure possession of land (land tenure), on the condition that the full rental value be paid to the community. This, they say, has the effect of both giving back the value that belongs to the community and encouraging landholders to only use as much land as they need, leaving unneeded land for others.[4]
Data is like land. It's not owned by anyone and we all consume it as a function of being human. The primary motivation of the SAFE Project is to preserve the public data. Private data on the other hand is like private property or private pieces of land and as a result there is a tax to pay. The tax is paid in Safecoins.
Thomas Paine's assertion in Agrarian Justice that "Men did not make the earth. It is the value of the improvements only, and not the earth itself, that is individual property. Every proprietor owes to the community a ground rent for the land which he holds."
These are my own interpretations of the motivations and intentions of the SAFE Project. It's probably premature for me to even make claims like that but I also don't think they just are blindly creating their economics. They do seem to have some philosophical understanding, and the design of MaidSafe seems to be intentionally heterarchical in some places (Proof of Resource). I think it's just a very difficult project to get right, and the only approach which will work requires a lot of experimentation, competition, until a business model is perfected.
An junk data attack for example could also be seen as a pollution attack on the land. If you pollute the land with trash then the value of the land goes down for everyone and future generations because land in this case represents the resources of the network.
I hope that metaphor helps to think about what the SAFE Project is trying to do. They are trying to free the land itself from centralized control it's under now. It's likely that if team MaidSafe messes up then another team will be developing the code and can fork it. Expect to see forks just as Bitcoin was forked. Eventually someone will get it right.