Moron, if they only mine BCH and sell it for profit it would crash the price even further. Do you actually think mining with a high hashrate is beneficial? Only when 51% threat exists.
What conditions are necessary in your mind for a "51% threat to exist"?
Also you caannot assume that large for-profit companies lose large amounts of money just so you can see a higher hashrate number next to BCH. They have to pay bills too.
If a miner is gaining hashpower at a rapid rate maybe you can start to get worried and redirect hashpower towards BCH. However, current BCH hashpower isn't small by any means.