My hunch is that companies tend to be paranoid and vastly overestimate the commercial importance of their source code. Are there really that many realistic opportunities to copy secrets from one mature source tree to another and commercially benefit from it? These code bases are likely totally different, use different design patterns, different internal APIs, data models are different, maybe even different languages.
Anyone who has done integration work between two totally foreign-to-each-other code bases knows that the integration effort is often greater than just writing the code from scratch.
The biggest risk is probably someone getting their hands on the entire project, including code, art assets, build infrastructure, and just compiling an identical program to release under their own name. But that would be obvious and probably easy to prove/litigate.
> Are there really that many realistic opportunities to copy secrets from one mature source tree to another and commercially benefit from it? These code bases are likely totally different, use different design patterns, different internal APIs, data models are different, maybe even different languages.
When you're stuck failing to make something work, it can be a large benefit to be able to look at how somebody else managed to make it work. Sometimes it's a bit you forgot to set on a register somewhere, sometimes it's a sequence of operations that tickles a hardware bug which can be avoided by doing things in a different order. On a higher level, sometimes the issue is that the A API is implemented as "return <error>" and only the corresponding W API is actually implemented. Or the trick to make the API work is to cast one of the many objects you already got into a non-intuitive poorly-documented interface, allowing you to call a method which returns yet another object which allows you to do what you actually want. And so on.
Anyone who has done integration work between two totally foreign-to-each-other code bases knows that the integration effort is often greater than just writing the code from scratch.
The biggest risk is probably someone getting their hands on the entire project, including code, art assets, build infrastructure, and just compiling an identical program to release under their own name. But that would be obvious and probably easy to prove/litigate.