IBM and to a larger extent Microsoft's business tactics in the 80s and 90s were not a failure of Amiga, Linux, or Apple (technology and capability-wise).

The fact that porn was allowed on VHS wasn't a failure of the Betamax technology.

Preventing key-jamming on typewriters is not a failure of Dvorak.

The technology does not matter, the real world decides. Right now, there is no reason for people to care about IPv6, other than when it's the cause of issues.