Re: nearly limitless power generation capabilities
This is a *requirement* for the Matter Replication and Transmutation and Transporters, and like you said would completely change society. I don't know if it would be the end of Capitalism, but it sure seems like we would certainly be more socialistic.
We currently spend all of our time and energy and resources on energy generation or transmission or conversion. Eliminating that should free up so much of our time and resources everyone might get to pick what they want to do...engineer, poet, accountant, heck even *student*. A lifetime of simply learning. How's that for utopia?
The trouble is it's all impossible and against the laws of physics. Sigh. How's that for pessimism?