We successfully fought off massive rent increases, as high as 90% in one case - 60% or 40% are not uncommon; even in today's difficult market for shopping centres! Also, we have saved many retailers from exorbitant refurbishment requirements.
When Bank Managers have acted like Gods, we have saved the small business from their capricious demands. When they were reluctant to lend, we produced winning Business Plans. And when they wanted to increase interest rates, we made them stop.
Unreasonable demands from suppliers can be pushed back.
As a small-business proprietor, your priorities are your customers, staff and your family. The Account Executive servicing you only cares about his/her end of year bonus.