This is nearly the entire business case for running your own gTLD, trademark owners are compelled to protect their marks. I worked on the .pro registry a few years ago, a motivation for the business to run it (because it wasn't big) was the hope that it would build the experience and infrastructure to support more gTLDs as ICANN opened up the creation process. But that didn't happen nearly as fast as possible and the company I worked for moved develoment offshore, so I sort of doubt I'm giving away anything they're still planning.

Running a small domain registry is an easy job. There are good RFCs for all the technology, your customers are a few dozen tech-savvy registrars, and you have low scaling demands. There are some availability concerns, but the knowledge for doing that right is now common. You hire a coder/support engineer to keep the servers humming and a business guy to create and maintain registrar relationships and otherwise just print money.

I thought about getting into the business in '07 but realized the entire thing depended on ICANN advancing the gTLD expansion and was a bit too risky. Four years later with minimal progress (.xxx isn't one of these, it's been kicking around over a decade) I'm glad I didn't start that business. Though ICANN has moved that along this summer...