> You would think that a company that has deep pockets would be in a great position to do more ground-up re-implementations. And to do so with quality, performance and correctness as the main focus.
Why is this always the go-to? The Windows 11 start menu and task bar are exactly that, from scratch re-implementations of what existed before and they are garbage. There is a lot of institutional knowledge in that old code and to pretend it holds no to little value gives us half-hearted replacements which never quite ascend to the heights they were supposed to replace.
Sure, there are some exceptions where the concept around "what the thing is" needed to change and a new product needs to re-imagine a solution (VS -> VSCode). However, I feel that we, the software development community, put way more hope that this is true way more often than it is in reality.