The cost is, with 8MB blocks, 95% of nodes that validate consensus will be excluded (unable to keep up or become too costly to run) within 6 months - as per BitFury's (heavily invested Bitcoin mining company) research on bigger blocks: http://bitfury.com/content/5-white-papers-research/block-siz...
Without full nodes validating consensus, miners can (will) force protocol changes (eg. change 21,000,000 coin limit) on users, effectively changing the decentralized leaderless attributes to a centralized dictatorial less-efficient PayPal. At this moment, bigger blocks mean a less-free (as in speech) bitcoin.
Without full nodes validating consensus, miners can (will) force protocol changes (eg. change 21,000,000 coin limit) on users, effectively changing the decentralized leaderless attributes to a centralized dictatorial less-efficient PayPal. At this moment, bigger blocks mean a less-free (as in speech) bitcoin.