Comcast started rolling out IPv6 across their network a long time ago. They hit 100% support on their broadband network in 2014. They run a lot of the own stuff on IPv6, such as on-demand video on their set-top boxes. I think any home modem/router that they support that did not support IPv6 hit EOL long ago and was replaced.
There may be some class A owners who are trying to hold back IPv6 so they can make money off their class A, but Comcast isn't one of them.
Apple has long had IPv6 support in their operating systems, so I don't think they have been trying to hold it back either.
Ford, Softbank, Daimler, and Prudential? It is not immediately obvious to me if they could do anything to hold it back even if they wanted to.
There may be some class A owners who are trying to hold back IPv6 so they can make money off their class A, but Comcast isn't one of them.
Apple has long had IPv6 support in their operating systems, so I don't think they have been trying to hold it back either.
Ford, Softbank, Daimler, and Prudential? It is not immediately obvious to me if they could do anything to hold it back even if they wanted to.