10a Use cases for Bitcoin decrease as more transactions types become economically not feasible
10b New investment in Bitcoin decreases as potential use cases decrease
10c Additional integration into Bitcoin decreases
10d Network effects decrease value in Bitcoin
10e BTC / USD drops
Ask Friendster what happens when you can't f'in scale. Anybody remember Friendster?
And this is exactly why some of you guys shouldn't be so hostile towards out-of-band transaction systems, even if that results in some degree of localized centralization. For that matter, member2member transactions on MtGox is localized centralization, but does not imply that MtGox suddenly has some special power over the Bitcoin community.
I'm definitely not hostile towards out-of-band transaction systems. They're GREAT, if you trust the centralized resources that provide them. I'm hostile towards a hard permanent limit of 7 transactions per second / 50GB per year transaction growth in Bitcoin regardless of the growth of storage and bandwidth capabilities because some people believe that fewer total transactions of a less used currency (with then decreasing utility and value) will somehow make themselves more money, perhaps, in the very short term until the system dies.
Buy hey, at least you can run a full node on your wristwatch!