[mrkstu]

Microsoft and Windows Control Panel migration to System Settings argue its pretty difficult indeed, even for the most well-resourced companies.

[dylan604]

The failure of company A to manage a roll-out does not predict the failure of company B. It just goes to show how badly company A manages their resources.

[mrkstu]

Or, alternatively, that companies with large codebases face similar issues of complexity and legacy interactions that aren't easy to just throw people/resources at, they just take the time they take in order to get it accomplished and persistence is preferred over alacrity.