Nanotechnology is everywhere now. Hospitals use it for surgery, industry uses it for production (and the moon uses it to manufacture modular parts which can be assembled into lunar architecture), and most modern materials are made with it. Hell, EZZippers are nanotech.
But a lot of things that were feared or hoped for aren't around. High resolution cameras which can see consistently are still millimeter sized, and the idea of a "nanocloud" that can travel around altering things is merest fantasy. At least so far.
Also, nanotech isn't very fast. The absolute speediest assemblers can perform a million operations per second (lift atom, move atom, place atom) per ten million atoms in the assembler. And in "tight" designs, nanotech is limited in speed by the surface area of the object. Naturally, it's still a damned sight faster than normal industry tech from the 20th century, but its real advantage is precision, not speed or energy efficiency.
Combined with cheap fusion power, cheap material resources from the Lunar City and Middle East (and soon the asteroid belt), and improved automation... nanotechnology has led to cheap "stuff".
A small car costs approximately $1000 in raw materials, and a few dollars worth of fusion power, to produce. Design costs are the only really expensive element, and old designs are very easily modernized. The most expensive small cars sell for about $15,000, and have no significant advantage over cheaper cars other than "style" and "status".
Of course, nanotechnological factories are mostly still in the possession of the corporations (for no reason other than profit security and nationalist fears), but the effects on the economy are still large. Materials wants are largely able to be met.
Moriarti is a hacker of ill repute who has not yet been caught. In '66, he stole a nanocell factory, and set up a Webnet encryption system for anonymous payment and delivery of anything you want to order from it. Worse, he freely allowed people to order their own nanocell factories, which he gleefully delivered. The result is that there is an unknown number of Moriarti clones using the original encryption system to deliver anything the masses want.
Despite the free love and free information of this system, however, it is very difficult to find. The Moriarti Complex uses billboards and message boards, on which encrypted requests for things (along with payment details) are posted. When the government (any government) manages to find one of these messages, they generally shut down the board posting it. So finding Moriarti is difficult... but once you have, you can place any orders you want, and sure enough, they'll be delivered.
There is no real limit on what you can order, as long as the ancient (circa 2066) nanocell factory can build it. Which includes almost everything but a more modern nanocell factory (which could produce the same things, but faster and with less molecular error).
The Moriarti Complex has constantly updated its methodology over the decades, but has been successfully repressed to some extent by cover ups, harsh sentences on people who use it, and so on. Nowadays, many people view it as a myth.
And for the more mercenary among you, capturing Moriarti himself has a $2 billion reward on his head, contributed to by numerous corporations and governments.
And yea, said the Lord, the blind shall be made to see, and the deaf shall hear, and the lepers shall be cleansed, and the paralyzed shall walk, for I have given unto you these things.
Modern medical technology is nothing short of miraculous. Damage to any part of your body can be repaired to its original state. Cloned tissue can be used to replace aging bones and organs and skin. Even your nervous system can be repaired.
Should you die, but have an intact brain, an ambulance can put you in cryogenic suspension, and the hospital can rebuild your body until it functions again, then bring you out of the freeze... although more than 10-15 minutes of death before the freeze pretty much gaurantees that you will be too damaged (they're working on that).
Even in those (now extremely rare) instances where you have a paralytic disease that can't be cured, they can put you in an Ultrawalker, allowing you to live life pretty much normally.
And yes, there are brains in boxes, using MicroGibsons alone to interact with reality and robot drones.
Note: Any and all of the above should be read as applying primarily to rich people. For poor people, they can repair most damage, but require prepaid accounts to send a cryo ambulance or do "cosmetic" operations like replacing aging organs with tissue-constructed ones. Some countries pay for this in a socialist system for even the poor, but most don't.