I gladly added my pool.bitcoin.com cloud hashpower to BCH to help start the chain, but I've pulled my hashpower off BCH for now. I'll likely return to mining after block #478582.
Right now we're still working with the difficulty of the old Bitcoin chain so block times are extremely long. This makes mining the chain very unprofitable for everyone: cloud miners, ViaBTC, etc. Because of this, the big miners have taken hashpower off the network and are only keeping the pulse going for now.
However, the developers of Bitcoin Cash included a means for the chain to eventually lower difficulty and this will start taking effect at block #478577. For this block and each of the next five blocks, the Bitcoin Cash difficulty will decrease by 20%. After these six blocks, the final difficulty will be only 26% or so of what it was, meaning miners will be able to mine blocks in about 1/4 the time! Look for hashpower to start flooding back at this point as mining the chain will become profitable again.
Here's the detailed explanation if you're interested:
https://medium.com/@jimmysong/bitcoin-c ... c589099a8e