These things start off very slowly, and then tend to somewhat exponentially grow and improve over time.
Have a look at LibreOffice. StarOffice was open sourced in 2000 by Sun as OpenOffice.org and started somewhat slowly. By 2004 OpenOffice.org was making steady progress, and had captured quite a bit of market share.
Then the OpenOffice developers and Sun started stymying contributions, and eventually Michael Meeks setup Go-OO with a bunch of patches that made the program easier to use. Then Oracle bought Sun and really pissed off key external contributors so they forked the product and in 2011 The Document Foundation was formed to oversee LibreOffice development.
Since then OpenOffice.org has stagnated and withered on the vine, whereas LibreOffice has had entire swathes of old and cruddy code rewritten and each point release has not only got huge numbers of bugs fixed, but often new features - and often entire subsystems have been rewritten without the end user ever knowing.
So give it time - it's been just over 16 years since it the StarOffice source was opened to anyone. ReactOS has been around at least this long, and due to the nature of the project isn't quite as fast, but each time I read a new release it occurs to me that development is accelerating rather rapidly!