It comes down to whether the user likes to browse source. There's clearly things that make open source software good: a large community of experts (or `nerds', but I prefer the term `expert') ironing out the bugs and adding useful features. If Linux closed their source, would it still have the same expert community working on it? Maybe yes, maybe no. If you do a code freeze of your open source software now, yes, it's good, but will it be good in the future? Maybe yes, maybe no. Who knows. Certainly the user will NOT know if it's good because the source is closed.
There is PLENTY of good closed source software. However, the openness of Linux/BSD/etc is one of my favorite features of those operating systems. Would I stop using them? No. I'm a software developer so ultimately I need to use a computer.