Only $299 million in advertising revenue last year.
It'd be interesting to know how much of that advertising revenue is paid for by the government one way or another, public service messages etc, to come up with a net commercial advertising revenue figure.
Presumably a "not for profit" and commercial ad-free service could still deliver those public service messages - free.
I don't watch TVNZ except for very rare occasions (news sometimes). The ads are at a ridiculous level.