Compared to closed-source software with DRM on it, where security researchers routinely get sued for showing defects in the software? There is a massive advantage.
How many vulnerabilities were found in comparable* closed-source software? How many back doors were put in there on purpose? And how many of those defects were abused but not published? Or just flat-out denied by the creators of the code?
*I can’t really think of closed-source software that is comparable, maybe it exists but the popularity of open-source variants of critical encryption software tells you a lot about the confidence of the market in open vs closed-source solutions.
