It is just plain normal language to refer to a loss as a comparison against a current trajectory or current state. It is reasonable to assume that the reader/listener knows that the future cannot be predicted exactly, because this is generally true. This is why it isn't said explicitly.

It would be silly to correct someone who said "I just accepted a $120,000/yr job" with "you don't really know for sure, you could get fired or die". The colloquial presumption is that the rate of future income cited is dependent on a steady trajectory without confounding variables.

It's real enough that companies regularly borrow against it, which is about as real as anything is with money.

It's not even that, it's revenue.

> MGM Resorts International could be losing between $4.2 million and $8.4 million in daily revenue

Revenue is a measure of income. Unless speaking about specific types of revenue or specific types of income, they are synonymous.

Accounts don't think revenue and income are synomymous: income is revenue minus expenses. Now if you were to say that profit and income are synonymous, that I might be okay with.

Revenue minus expenses is "net income". "income" is ambiguous.

OK. I believe it.

> it's a loss of projected income, which in many ways is not real

About as real as money.

It's more real than not.