https://www.reddit.com/r/Bitcoin/comments/3chtdp/the_blocksize_cap_is_basically_worthless_for/csvqatg?context=3
IOW, the costs of the 1MB cap are much greater than advertised.
consider all that spam stacked up in the mempool currently. all this has been passed around to the entire network and full nodes have had to validate all that crap upon receipt and then store it in memory awaiting a block to clear it. if the block doesn't come that incl that spam, it gets deleted within 24-48 hr returning the tx fees to the attacker. note that the attacker doesn't even care to get the tx's cleared; he simply wants to cause all sorts of congestion (which he is getting) so as to disrupt and discourage new and existing user growth which prevents Bitcoin from squaring it's value thru Metcalfe's Law.
fuck the fee mkt the mouth-breathing Cripplecoiner's spout off about. the 1MB cap is much more expensive to honest Bitcoin.