>> Появилась коммерческая версия

это плохо?

>> в опенсорсную версию коммитят по остаточному принципу, полтора человека.

Да ну?                                                                          
                                                                                
$ hg log -r "date('2015-04-25 to 2016-04-25')" | grep user:| sort -u | wc -l    
                                                                                
2015-2016: 18                                                                  
2014-2015: 25                                                                  
2013-2014: 25                                                                  
2012-2013: 8                                                                    
2011-2012: 7                                                                    
2010-2011: 7                                                                    
                                                                                
Для справки: NGINX, Inc. was founded in July 2011                              
                                                                                
Теперь взглянем на количество изменений:                                        
                                                                                
$ hg diff --stat -r "first(date('2015-04-24'))" -r "last(date('2016-04'))"      
                                                                                
2015-2016: 244 files changed, 22163 insertions(+), 9749 deletions(-)            
2014-2015: 196 files changed, 12974 insertions(+), 6473 deletions(-)            
2013-2014: 187 files changed, 11129 insertions(+), 3153 deletions(-)            
2012-2013: 189 files changed, 17002 insertions(+), 3224 deletions(-)            
2011-2012: 385 files changed, 18776 insertions(+), 6388 deletions(-)            
2010-2011: 141 files changed, 10195 insertions(+), 2647 deletions(-)            
                                                                                
выводы делаем сами  

>> И репы в каком-то hg.

Вам шашечки или ехать?