Small businesses need a steady supply of capital (which includes cash and credit) to stay in business. Understanding the different sources of capital at your disposal and the risks and benefits of each will help you better manage your cash flow and stay in business, even during lean cycles.
It seems as though you can get a mortgage almost anywhere - you are not limited to traditional financial institutions. There are, however, distinct advantages for those who take the time to sniff out a full service bank instead of the "best price" on a mortgage rate.
Working capital loans are a tool that small businesses can use to manage their cash flows. They help to cover your cash needs when you're making money but your accounts payable due dates don't line up with when your accounts receivables will be coming in.