I don't understand "it's not that simple" in this context. Is ipv6 a new problem? Is MS a one-person volunteer diy project? Is MS is some other buisiness and n

I don't understand "it's not that simple" in this context. Is ipv6 a new problem? Is MS a one-person volunteer diy project? Is MS is some other buisiness and not expected to have good IT because they are cheese makers? If the job is so hard that it takes 20 years and billions of dollars and really only an IT company has the domain specific knowledge to do it, ok well, and?