"How they can justify $50 for that"
They don't need to justify. The only reason they would even think about this is if the detriment didn't outweigh the benefit. If perhaps x% of people think that it's a ripoff and 90% don't or don't even know or think everything is a ripoff anyway then why not get the extra revenue?
My guess is that the amount of people that even have any understanding of what is involved is quite small.
"But actually, the $110/mo charge covers that, and always has."
What do you mean "and always has"? Are you saying because they consistently turn a profit then you have decided they have enough to cover their fixed expenses and they shouldn't try to add to the bottom line? Not to mention that off the top with a billion dollar corporation you really don't know what is going on there anyway.
"Third is because the company is making plenty of profit, but the parent company wants more, so they're pushing it to do stupid stuff like this"
In a capitalist system there is really no such thing as "plenty of profit". The mere fact that you feel like it's up to you (or anyone else who makes comments) to decide "ok that's enough" really does not make any sense. I mean you've never seen profitable companies go out of business or bankrupt that at any point in time someone would have said "they make plenty of profit". (We can start with General Motors, Chrysler etc.)
"A large percentage of employees are looking for work elsewhere, it's just unfortunate there are not many options"
I'm unclear what the amount of employees looking for work matters with respect to what they charge. Are you implying that things like this make employees want to leave? I somehow doubt that.