If you understand what I mean by wages.. I know there's a condition in the PL that you can only increase your wage bill by a certain % each year. It caused a lot of frustration for Everton after their takeover but looks like it's saved them a fair bit of wastage. I wonder if there's similar in the Championship.
Although I've just had a look and can't see anything. Found this table though:
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Have no clue what's changed since then (as this looks quite old) but was the most relevant Google result.
Elsewhere in the article it talks about average being 13m loss but in this table it says 13m in a single season, which is two quite different things (and I think this table is worded slightly wrong as you can offset a loss in a season with profit from previous seasons).
As to the owner equity issue, since as you and others claim, Acun is digging into his own pocket quite a bit, that's not a concern.