It is clear that the investment community will be obliged to diversify.  Bitcoin can go a long way on 1MB blocks and big (relatively) transaction fees; it appears SegWit is not gaining the support it needs to go through but who knows it may still make it; without SegWit can Lightning be made to work?  Which other altcoin is going to become the darling of scalability?  Or perhaps there will be many.  Or is there indeed some fatal flaw that always draws any of them into centralization?