I'll answer this... The chain won't be able to sustain itse…

I'll answer this...
The chain won't be able to sustain itself on 1mb worth of transactions fees, the miners will abandon the chain as it won't be profitable.
They will go over to the original bitcoin protocol where unlimited transactions will support the network.
That's it
(Video quality is low due to compression to get it under 6mb to get it on chain)