For the players of the internet infrastructure market ipv6 is uninteresting. They've divided the v4 address space between them and have crafted strategies to dominate the market. This is nothing exceptional or strange, but rather applied business strategy. I'd bet that they're willing and even motivated to fight v6 adoption for the purpose of maintaining their position at current terms of technological environment. As they see it, v4 is delimited to something ownable, controllable. V6 is for them something that would reset the playing field and make a significant portion of their investments obsolete.