Disclaimer: I have a company and I've started a few in the past.

My take is that the loyalty a company has towards a given employee cannot be the same, simply because it lacks the emotional basis that usually makes that loyalty as strong and/or as irrational. It's completely a matter of company culture which, in most cases, isn't very empathic to employees.

I don't think lack of loyalty is a rule though. I think that if the company culture is set up properly, it can totally have some form of valuable, albeit different, loyalty towards its employees.