Alice will have several orders of magnitude more projects on her CV than Clyde has. When Alice is applied to a harder problem (that can't be solved with Wordpr

Alice will have several orders of magnitude more projects on her CV than Clyde has. When Alice is applied to a harder problem (that can't be solved with Wordpress), she'll be able to solve it far faster and more effectively than Clyde because she won't have the not-invented-here hubris and will stand appropriately on the shoulders of giants to construct something that will likely be far more maintainable, broken down into saner components, and on the whole, more effective. Clyde will be valued as a 10x engineer at his company forever, but would probably find it very difficult to start somewhere else where he doesn't have the luxury of having written the entire codebase.