I don't really know where else to go from that.. 1MB will seem like 1KB soon enough. What do..
What are you talking about? With segwit we get 2-4 mb 
if I'm not wrong.4mb? no way, at best it's 2MB, actually a bit less, but miners do not agree in the activation, it will never happen
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?
All PoW coins will Centralize , the laws of economics guarantee it.
Fewer Miners, higher prices (due to manipulation), and higher fees (eventually to become unsustainable)
well pos coin is even more centralized, with the bad distribution and the scheme of rich become even richer, you can't have fully decentralization
the only way was to change the algo every so years to prevent asic and keep the gpu mining, maybe it will be done in the future, if 51% become a reality
PoS will only Centralized if it has extremely high interest rates, where the holder never has to sell anything but their interest to Profit.
A POS coin with extremely low interest rates will not centralized, as whenever the holder sells any , he is selling from his principle amount and not just interest gained.
Chinese already have ~68% combined, they are not letting anyone change the algo , BTC core can't even activate segwit because the Chinese don't want it.