There is one huge exception to this: ACE-Net (http://activecapital.org). This is more properly the Access to Capital Electronic Network run by venture capitalists, institutional investors and individual accredited investors. It was developed by the U.S. Small Business Administration's Office of Advocacy to encourage the creation of a national marketplace for investors to find and invest in equity offers by small companies.
ACE-Net isn't for all companies. Those seeking under $1 million will probably find the paperwork daunting. Those seeking over $5 million won't qualify. There are special qualifications, and of course lots of forms to fill out -- but nothing like the forms required for a formal initial public offering.
But for those who do qualify, it's an amazing tool in raising financing. Spend some time with the website and the forms, and see if your local SBA office can put you in touch with another company that went through the process.