I think good quality software is a relative term, and I'd rather have useful softwares. What happens in big company is when software age, fresh employees will s

I think good quality software is a relative term, and I'd rather have useful softwares. What happens in big company is when software age, fresh employees will say it is not a good software, then they will start from fresh code base, maybe discard some features, write some new bugs, the software would generally at the same level as the old ones. The same can happen in opensource community as well, someone could start a new ffmpeg.