I absolutely hate to admit it but these disruptive technologies will force income redistribution on the world to a degree never seen before. Indeed, I think that's already starting to happen. While mobs in NYC protest the evil "1%", wiser heads understand that this 1% now pays 43% of NYC tax revenue. Driving them out of town would be financial suicide. Skewing any tax base in the name of being fair creates a potential disaster in an economic downturn as revenue vanishes from big payers while the populace applies for food stamps ...... but as Futurama reminds us, "you gotta do, what you gotta do".
One of the reasons for deflationary forces is job loss and that's going to happen to banks, utilities, oil companies, and state governments that can't find enough revenue, even after they triple car registration$ and huge increases in property taxes (they will be forced to go after things that are most fixed and simple to account for). VAT tax revenues will plunge as more people 'do for themselves' with free energy and cut out the tax paying middleman. It will, however, be an absolute delight to watch greedy, sociopathic corporate executives turn on each other, fighting to steal what the deflated masses can no longer provide. - like MF Global stealing speculators money. The poor wolves can find no sheep and are starving, alas. We'll see more of this. If stem cells and regenerative medicine explodes, you'll see nurses giving more curative injections while surgeons look for work. If 'Watson' creates an AI that can dependably hand out burgers and fries, God Help Us All. A small rural house with some farm land would be a good idea....... All of the above relates to the question, "what would actually happen if we did have 'Star Trek' technology?" While the series was inspiring, they never really answered the question of how an economy with unlimited energy and Replicators is supposed to work. (Sigh! - probably a kind of socialism and they didn't want to say that) My long term investment advice: invest in dividend paying stocks in tobacco, alcohol and Australian bonds (tourism and commodities and they have a near monopoly on weird-ass animals). Ask yourself, 'if almost everything changes, what probably won't?".
