It's not so much "companies reaping the benefit". It's more of just a continuing stream of SKILLESS LABOR being eliminated.
More jobs will emerge - undoubtedly.
BUT - the problem at hand is that we are forever entrenched in a culture that doesn't seem to have a problem with over 25% of our population having absolutely no worthwhile skills.
Yes - SKILLS like plumbing, electric work, and even carpentry will not go away.
HOWEVER - SKILL-LESS jobs such as driving, taking orders, cooking (fast food),, assembly work, farm work, amazon warehouses, etc... will be automated. It won't be overnight. It won't all occur in the next year... But anyone who denies this needs to seek mental help.