Bitcoin ABC is Bitcoin Cash, ABC controls the project and decides what is happening

Amaury was supposedly paid for 1 years work by bitmain to fork it and get it off the ground

Bitcoin Cash was a contingency plan bitmain is getting their main business taken from under them there was talks of a PoW change and bitmain needed something they could control so their miners couldn't be made obsolete.

The same is happening now with monero fluffy pony tweaked the algorithm to brick bitmains cryptonight miners so they forked off monero classic that supports bitmain (is paid for by) so they can continue to have a coin that is in their control and they can guarantee it's future.