An effective block size limit doesn't mean that some transactions get more expensive - it means all the transactions which are allowd to be process become more expensive and the rest are prohibited entirely (right up until Bitcoin becomes so completely unfit for purpose that it's abandoned entirely)
Abandoned entirely? There you go again, mongering DOOOOM without basis in fact to scare people into a panic so they will accept GigaBloat in haste.
If you don't believe Bitcoin is antifragile, sell your coins and GTFO. Start GavinCoin and let it try to compete with SatoshiCoin.
It's been a pleasure watching DP and Davout slap you forkers around all over this thread.
This is the the crux of the matter, and where the pro-bloat side lose the debate:
The true value that Bitcoin brings to the table is not "everyone gets to write into the holy ledger", it is instead "everyone gets to benefit from sane and non-inflationary financial instutions whose sanity and honesty are ensured by the holy blockchain".