I am so sick reading stuff like this over and over. This kind of elitist thinking is very dangerous imho.
The Whitepaper says "A peer to peer cash" system. As long as lightning network and co are not production ready
the coffee goes in the blockchain - deal with it.

Also the 7$/TX theoretical cost ist retarded, this is mostly because the 1MB blocklimit, if we would raise it to say 10MB
it would go down to 0,70$/TX and so on. ( of course this shit is inefficient, but it makes sooo much economic sense wtf )

I know decentralization above everything blabla, but I think we have to make a tradeoff here, most fullnodes are servers or on cable
connections anyway. Those machines don't care much if the blocksize is 1, 2, 4 or 8 MB... They run anyway, top 5 fullnode networks:

 

I agree decentralization is very important and we shall not lose it, but it is also a very subjective and hard to measure thing.
We have to find the sweet spot that makes most sense:
http://www.coindesk.com/how-to-save-bitcoins-node-network-from-centralization/