Is it feasible to build alternatives to 1, 2, 3, and 5?
As far as privatizing the physical infrastructure: your hardware should be yours. Anything past that should be common carrier/ISP. Need an alternative? Good luck.
Decentralize the cloud? Owncloud works on most hardware.
Decentralizing payment software? What do ya think bitcoin is supposed to be?
But decentralizing DNS... Yeah... That's a challenge. Probably not gonna happen non-maliciously for a long time.
The 20-teens equivalent of tulip bulbs.