The CTI's goal is to spur local broadband infrastructure: The idea is to get municipalities involved in stating their goals and needs for broadband, but the CTI doesn't support a particular method of reaching those goals. Each town and city should take action in understanding what they need instead of waiting for other interests--incumbent, governmental, or otherwise--to bestow broadband upon them. I wouldn't describe this group as pro-municipal broadband, but rather pro-municipal understanding of broadband.
I've lead a dogged pursuit of the financial connections among groups opposed to any municipal involvement in broadband, telecom, and cable, and I would be suspect if I didn't track the CTI's origins. The CTI lists "endorsers" and a "facilitator."
The endorsers include TechNet (huge variety of leaders of large technology firms as members), Public Technology Institute (city and county governments), AeA (board contains a vast array of technology companies), Information Technology Association of America (no membership list, but an array of large tech companies on its various boards). The facilitator is Digital Village Associates, a firm that works on private/public partnerships.
I see lots of capitalists in these lists. And lots of companies that sell to both public and private enterprises, and thus have every interest in ensuring more broadband and more partnership to improve American competitiveness and our economic vigor.