I know Dan Larimer, co-creator of steem/steemit, is working toward a 0.5 second block. Steemit runs on a 3 second block; and bitcoin is roughly 10 minutes.
I always assumed that bitcoin would.
A: Harness superior hashing power to destroy any threatening alts
B: Incorporate any new, exciting code/ideas into itself, retaining it's network effect and nullifying any first mover advantage the altcoin had.
DPOS stops bitcoin miners from launching a 51% attack, and the btc devs don't seem to agree on anything, so superior code is unlikely to make it past the gatekeepers.
That's my main two reasons for keeping btc front and centre, both dead in the water.
Certainly something to think about. (I also currently hold a reasonable amount of btc, but I know we're not deciding the truth here, merely trying to discern it)