"How much would these "Total assets" be valued at in the real market ??"
Good question. Ask Peter Brown of Westnet. I believe he was paid $80M for his business, of which nearly the whole amount was "goodwill."
Didn't somebody mention that in this thread...?
In any case, there is an impairment test which the auditors apply each year to our carrying values, and if they are not supportable by earnings, they are written down.