We tried the open source model for over 2 years. User contributions were very low, so nearly all work was done by us. So we ended working 10 hours a day 7 days a week which we could not spend earning money. In addition other used our work for their profit without sharing it with us. Fortunately not all companies go that way. Quite some printer vendors support us with custom host version and we believe this step will even increase the number of supporters, so we can keep a free host version with new features. The alternative would be to stop developing the host, which would be even more lost to the community.
Thread with official confirmation: http://forums.reprap.org/read.php?267,313864
Post any thoughts you may have that are on-topic. Please do not threaten the developer.
Questions to consider: Will you be using Rep-Host anymore due to this decision? How do you feel about the devs closing development? What alternative(s) will you use? Can a free, open 3DP Software be supported in this modern day? What software is next on the chopping block? What vendor is next?