As a fellow non-North supporter I love the questions you ponder about North. it saves me the hassle (and threats of arson from Punky) of having to post them too. In the words of Zinsky from the classic 1981 movie
Stripes, "Let me say I will be right behind you all the way!"

However to save a lot of angst on here is it not better, at the end of the day, to let the North people worry about how their club is being managed. I too am a touch incredulous about how North could make a loss given their alleged income streams. Just my opinion though.
As to my own backyard with a huge sponsorship deal, membership sales over 150 more than this time last year and 1st qtr income above budget for the 2008-09 footy financial year I am quietly confident of Glenelg being back in the black come this time next year - no doubt their will be a chorus line of posters on here quick to remind me of another 1980 TM outlandish statement if I'm wrong...
However if our perforamces head South (pun most certainly intended) and we don't get the same level of match day support i.e. $$$ spent over the bar/food outlets that could change. Bandwagon supporters = more $$$$ and only good on-field results keeps the bandwagonners.
So the answer to your question about the future od the SANFL clubs thoughs with good management, government processes and good onfield resuls will survive.
Let that be a lesson to you Port, no one beats the Bays five times in a row in a GF and gets away with it!!!