@Sukrim And how this contradicts anything I said? Or are you picking on 50% I mentioned and not 51%?
I'd rather pick on your "comprehension issue" flame and that you mention 10 GH/s and not 10TH/s...

With a new block chain, you would have (like namecoin) first see difficulty explode and then the whole chain dying out slowly.
Also he is specifically talking about Bitcoin. Any blockchain that enforces these rules rather than leave it up to the miners would not be "Bitcoin" any more.
To enforce such a rule in the Bitcoin network, there are 2 ways:
It becomes the "de facto" minimum standard agreed upon between all/nearly all miners + pools, so it takes nearly forever until transactions that don't "fit" to that scheme are confirmed, forcing everyone to pay these fees.
More than 50% of miners want this fee and risk heavy forking, big parts of their income and that someone might come online/start mining to "overrule" them and they start 51%-attacking the network, pushing blocks with undesired transactions out of the block chain. The bigges this fraction becomes, the easier it gets to invalidate "rogue" blocks, so after some time, once a part of the miners has "won", it will become
impossible to get a transation into blocks, that doesn't conform with these rules, as it will be 51%-overruled as fast as possible. This however would very likely lead to a split or to people fleeing from Bitcoin, who are not happy with these rules.