Norwich City have walked towards the cliff and peered over the edge before.
As the Canaries prepare to return to the Premier League after a season away, Webber has rejected the idea of spending heavily in the push for survival.
"You can spend £120m net and get relegated. That's been proven more than once," said Webber.
"We can't go all in now just to try to stay up for one season because, if we get relegated, we're in deep, deep trouble.
"You can do that if you have a rich benefactor who says: 'Spend £100m - if it goes wrong, then I can actually afford to write that off.