Well, once it comes up there "won't be an alternative" because "network security" and there will also be this mob of sheep-zombies that support that shit much in the same way they support Gavincoin now. Raising the 21M limit will be sold to you as "what the community wants" and "what will bring in big money" and all that punchlines ...

And i mean... after sheep fell for Gavincoin it's really not that big of an issue to raise the limit on coins, really. It could become even inevitable when after a blocksize increase the growth predictions for txs don't happen and that fee market is never established because of it. Running a bloated blockchain with lots of microtx-spam on hot air is hard to do (mind you blocks should grow automatically instead of raising fees in Gavins' phantasy, so with Gavin there will be no fees only endless increase in blocksize). So raising the limit on max coins will be easy once the projected growth isn't happening. People will cheer "network security" and "longevity" to that and there will be talks about big investors now finally buying that BS and so on and so forth ...