On the flip side of that, I've recently had to deal with a few issues with some proprietary software, where it would have been really, really useful to be able

On the flip side of that, I've recently had to deal with a few issues with some proprietary software, where it would have been really, really useful to be able to look through the source code, but I couldn't. Instead I had to rely on incomplete documentation, and customer support that didn't have enough technical knowledge to fully understand the problem.