Industry-segmented stock markets for micro- and small-businesses

Something that I am found of with GolfInvestors is the focus on setting up stock markets along industry lines (industry-segmented) which are for micro- and small-businesses. Some of the key factors of these types of stock markets are:

• experts handle the market, not generalists
• specific financial metrics for the industry are used for financial reporting
• specific accounting rules and statements are used based upon industry factors
• better transparency
• investors understand the figures better for the companies they invest in or are reviewing
• easier and quicker reporting

Can anyone else think of why industry-segmented stock markets will work for micro- and small-businesses?