Watch the full interview: http://domainsherpa.com/phil-corwin-ica-interview/
Large corporations have deep pockets and large intellectual property staffs with which to protect their interests, including trademarks. The result of such financial power can often be lobbyist-influenced legislation that does not favor domain name investing.
What you probably didn’t realize is there is a domain name trade association that since 2006 has been representing the financial interests of domain name entrepreneurs.
Spend 45 minutes learning about the Internet Commerce Association and the accomplishments the organization has made to date.