Lots of proprietary software are abandoned & unmaintained on old storage devices, the statistic about abandoned software on Github is meaningless. On quality:

Lots of proprietary software are abandoned & unmaintained on old storage devices, the statistic about abandoned software on Github is meaningless. On quality: quality is very suggestive. Quality changes if you factor in questions such as: Does it run well on low-end devices, does it track you, will it still open your files in 10 years, will the company still exist in 10 years, does it work well on many platforms, can it be automated, etc.