I was reading some articles in The Economist that sparked some Shadowrun thoughts (you may be surprised, but this happens all the time and is the prime reason I read that magazine).
The emerging economies, led by the BRIC (Brazil Russia India China), but also others including African countries, are more and more being regarded not as outsourcing and manufacturing hubs but also as countries churning out cutting-edge innovations. Basically, necessity is the mother of all inventions. These countries have VAST markets, but where each consumer is independantly, well, poor. But together, they form gigantic markets everyone would just love to tap. So, locals innovate. They create technology that is simply cheaper to produce, while still being of good quality. Tata has a 2000$ car; an Indian hospital charges 2000$ for open heart surgery rather than the American 20,000$ (with the same end-quality level) by performing operations according to the Henry Ford model (patients are led through a prep "chain" before reaching doctors that do nothing else but surgery after surgery), etc. One particular innovation is cellphone banking in Africa. Thanks to a cellphone with a built-in fingerprint scanner, and of course the correct information infrastructure, a banker can bike to a small village, sit down under the shade of a tree, and take care of the banking needs of people as they come to him. They are authenticated using their fingerprint, and the banking transaction is recorded over the cellular network.
This all relates to Shadowrun through the idea of the SINless mass. Shadowrn society is sharply divided into haves and have-nots. The shiny new technology is of curse in the hands of the corporate citizens. In exchange for their souls, these citizens get all the goo-gahs to obliterate their minds on. However, the SINless would surely find ways to adapt this technology to their own ends. Banking in the Barrens might similarly be handled by a guy with a commlink - similar in fact to those dudes in Lagos were described. Men of trust that handle people's finances. Anyway, my thought was just that a lot of the innovations being applied to today's emerging markets probably have their equivalents amongst SINless society. They may be unwashed masses, but they have needs too. We often imagine the needy as having no way to fill their needs because solutions are too expensive, but there is ALWAYS a guy that will fill that needs in a way suited to this micro-economy.